Summary: Fish roe are the eggs produced by female marine and freshwater species. What is a reproductive mechanism for the fish, for gastronomy represents one of the world's most valued ingredients: tiny spheres that concentrate marine flavor, surprising texture, and extraordinary nutritional value.
Table of Contents
- What are fish roe?
- Types of roe: a complete guide
- Sturgeon caviar: the king of roe
- Salmon and trout roe: ikura and more
- Tobiko, masago, bottarga and other varieties
- Hake roe and other white roe
- What are fish eggs called?
- Nutritional value of roe
- How to serve and taste roe
- Storage and preservation
- Frequently asked questions
- Conclusions
What are fish roe?
Fish roe are the eggs produced by female marine and freshwater species. What is a reproductive mechanism for the fish, for gastronomy represents one of the world's most valued ingredients: tiny spheres that concentrate marine flavor, surprising texture, and extraordinary nutritional value.
The world of roe is immense. From the exclusive sturgeon caviar, which can exceed 5,000 euros per kilo, to the humble cod roe consumed in Scandinavia spread on rye bread, each variety has its own personality, tradition, and place in the kitchen. What they all share is that explosion of flavor released when bitten: a small capsule that bursts in the mouth, leaving iodized, salty notes and, in the best examples, a long and complex aftertaste that recalls the purest state of the sea.
At Bacalalo, we work with several of these marine treasures. Our salmon roe are a benchmark for those seeking quality without the prohibitive price of caviar, and in our gourmet preserves section, you'll find options to explore this fascinating world. But before buying, it's worth understanding the differences between the various types, because not all roe are alike nor are they used in the same way.
This is our pillar guide on fish roe: here you have the complete map of all varieties. Each type also has its own in-depth guide (sturgeon caviar, salmon or ikura roe, mullet roe and bottarga, masago, tobiko, tuna roe…), which we link in each section for you to delve into what interests you most. If you are looking for the pinnacle of roe, Caspian caviar is the starting point.
The history of roe as food dates back thousands of years. Ancient Persians already consumed Caspian Sea caviar in the 4th century BC, considering it a food with energetic and medicinal properties. Vikings dried cod and herring roe for their sea voyages, valuing them as a concentrated source of nutrients. In Japan, ikura (salmon roe) has been part of culinary tradition for centuries, while in the Mediterranean, bottarga (pressed and cured mullet or tuna roe) was already being made in Phoenician times. This universality demonstrates something fundamental: wherever there is fishing, there is a tradition of utilizing roe.
Types of roe: a complete guide
Fish roe can be classified by species, size, preparation method, or price. Here, we will take a complete tour of the most important varieties you will find on the market, organized from most to least exclusive.
In-depth guides by roe type
Classification by grain size
- Large grain (5-8 mm): salmon roe (ikura), trout roe. Appreciated individually, they burst in the mouth with a notable pop.
- Medium grain (2-4 mm): sturgeon caviar, tobiko. The ideal midpoint: individual texture is perceived, but several can be eaten at once.
- Small grain (1-2 mm): masago, lumpfish roe, herring roe. Consumed as a paste or topping, the sensation is more creamy than explosive.
- Pressed or cured: bottarga, tarama, karasumi. These are no longer individual grains but compact blocks that are grated or spread.
Classification by price
- Premium (more than €500/kg): Beluga, Osetra, Sevruga caviar.
- High-end (€100-500/kg): Siberian sturgeon caviar, Alaskan wild salmon roe, artisanal mullet bottarga.
- Mid-range (€30-100/kg): trout roe, natural tobiko, farmed salmon ikura, tuna bottarga.
- Accessible (less than €30/kg): lumpfish roe, masago, cod roe (tarama), substitutes.
Sturgeon caviar: the king of roe
The term caviar, in a strict sense, only applies to the roe of sturgeon (Acipenser), a prehistoric fish that has been on Earth for 250 million years. Everything else is "roe of" or "caviar substitute," although marketing sometimes blurs this distinction. If you want to delve deeper into this world, our complete guide to sturgeon caviar will give you all the details on qualities, types, and labeling.
Main varieties of caviar
- Beluga (Huso huso): the most prized. Large grains (3-4 mm), pearl gray to dark gray color. Buttery, smooth flavor, with notes of nut and sea. Beluga sturgeon can take 20 years to mature, which explains its price: €3,000-8,000/kg. Originating from the Caspian Sea, it is now farmed in aquaculture in Italy, Spain, China, and Iran.
- Osetra (Acipenser gueldenstaedtii): considered by many to be the caviar with the best quality-to-flavor ratio. Medium grains (2-3 mm), color varying from golden to dark brown. Golden specimens (Imperial or Royal) are the most valued. Complex flavor with notes of nut, hazelnut, and sea. Price: €1,500-4,000/kg.
- Sevruga (Acipenser stellatus): small but intense grains. Dark gray to black color. More pronounced and iodized flavor than Beluga or Osetra. Matures faster (7 years), making it more accessible: €800-2,000/kg.
- Siberian sturgeon (Acipenser baerii): the "gateway" to authentic caviar. It farms well in aquaculture, matures relatively quickly, and offers medium-grain caviar with good flavor at a reasonable price: €500-1,200/kg. It is the most produced caviar in Europe.
How to properly taste caviar
Caviar is served cold (never frozen), on crushed ice, in its original tin or in a glass, mother-of-pearl, bone, or wooden container. Never in metal, which alters the taste. It is eaten with a mother-of-pearl or wooden spoon, directly or on blinis, toasted bread, or the back of the hand (between the thumb and forefinger, which has no taste). The amount per person as an appetizer is 10-15 grams, although connoisseurs speak of 30g as "the dose of happiness."
Related products from Bacalalo
Salmon and trout roe: ikura and more
Salmon roe is probably the most popular roe in the world after caviar. In Japan, they are called ikura (from Russian ikra, meaning "roe"), and they are a fundamental ingredient in sushi and donburi. They are large spheres (5-7 mm), intensely orange to red in color, with a membrane that bursts when bitten, releasing a saline and slightly oily liquid.
Salmon roe (ikura)
The best salmon roe comes from wild Pacific salmon: the Keta (Chum) and Sockeye varieties produce the largest and firmest roe. Atlantic farmed salmon roe is smaller and has a thinner membrane, but it is also valid. The traditional Japanese process is to marinate the roe in a mixture of soy sauce, dashi, and mirin (shoyu-zuke), creating an intensely umami ikura. The Western method is direct salting (3-5% salt), which better preserves the natural flavor of the salmon.
At Bacalalo, we offer salmon roe selected for its size, firmness, and freshness. They are perfect for sushi, toast, salads, and as a luxurious garnish for any fish dish.
Trout roe
Trout roe is the most accessible alternative to ikura. Slightly smaller (3-5 mm), golden-orange in color, with a milder and more delicate flavor than salmon roe. They are perfect for decorating dishes without the roe's flavor dominating. Their price is usually 30-40% lower than salmon roe of comparable quality.
Tobiko, masago, bottarga and other varieties
Tobiko (flying fish roe)
Tobiko is the roe of flying fish (Exocoetidae), very popular in Japanese cuisine. They are tiny (0.5-0.8 mm), crunchy, and have a slightly smoky and sweet flavor. Their natural color is reddish-orange, but they are often dyed: black (with squid ink), green (with wasabi), yellow (with yuzu), or red (with beetroot or chili). They are the classic topping for California rolls and inside-out maki. Price: €40-80/kg.
Masago (capelin roe)
Masago comes from capelin (Mallotus villosus), a small fish from the Atlantic and North Pacific. They are even smaller than tobiko, with a less crunchy texture and a milder flavor. In practice, many sushi restaurants use masago as an economical substitute for tobiko (sometimes without declaring it). They are perfectly valid as an ingredient, but it's worth knowing that they are not the same. Price: €15-30/kg.
Bottarga (cured and pressed roe)
Bottarga is a completely different product: roe from mullet (Mugil cephalus) or bluefin tuna, extracted whole in their sac, salted and air-cured for weeks until they form a firm, compact block of dark amber color. It is grated over pasta, salads, or toast, providing an intense, salty, and complex marine flavor. It is the "caviar of the Mediterranean," essential in the cuisine of Sardinia, Sicily, Spain (Murcia, Alicante), and North Africa.
- Mullet bottarga: the finest. Complex flavor, elegant bitterness, waxy texture. It is the classic Sardinian bottarga. Price: €150-300/kg.
- Tuna bottarga: more intense and dark, stronger and more pronounced flavor. Typical of Sicily. Price: €80-150/kg.
Cod roe (tarama)
Smoked or salted cod roe is the base of Greek taramosalata, a pink cream of roe, soaked bread, lemon, and oil. It is also widely consumed in Scandinavia, where smoked cod roe (in tubes) is a common breakfast spread on crispbread. In preserved form, it is an accessible and versatile product. Mild, smoky, slightly salty flavor.
Lumpfish roe
Lumpfish roe (Cyclopterus lumpus) is the most economical on the market. Small, dyed black or red, they are sold in glass jars in any supermarket. They do not have the complexity of caviar or the explosiveness of ikura, but they serve their purpose as decoration and a source of marine flavor. They are the entry-level option for those who want to try the concept of "roe" without a large investment.
Hake roe and other white roe
Among the most sought-after and consumed roe in Spain is hake roe, an accessible delicacy highly appreciated in Mediterranean cuisine. It is sold fresh, cooked, or salted, and prepared in many ways: cooked and dressed with oil and lemon, battered and fried, or in salads. It has a smooth, creamy texture and a delicate marine flavor, less intense than caviar but very versatile. Along with lumpfish and salmon roe, hake roe is among the richest dietary sources of omega-3, according to a study by the University of Almería.
In this same family of white and accessible roe, we find ling roe (tender texture, intense sea flavor) and bonito and tuna roe, which when pressed and cured give rise to mojama de hueva. If you are interested in salted tuna roe, we have a guide dedicated to mojama and tuna roe.
The most popular way to eat them? Fried roe: battered in flour and egg and fried in olive oil, they are a classic appetizer in Andalusian and Levantine cuisine. They are also served cold cooked, sliced on bread with tomato.
What are fish eggs called? Huevas vs huevos
A very common question: do you say roe or fish eggs? Both forms are used in everyday language, but there is a nuance. Roe (singular, or roes in plural) is the correct gastronomic and biological term: it refers to the mass of eggs produced by the female fish, usually contained within a membrane or sac. When people search for "fish eggs," they usually mean the same thing, but the precise word in cuisine and fishmongering is "roe."
Regarding the spelling "güeva": it is a colloquial and incorrect way to spell "hueva" (roe) that arises from pronunciation. The valid form in Spanish is hueva, with an h. And the difference between huevas and huevos is simple: "huevos" (eggs) is the generic term for the ova of any animal (including individual fish eggs), while "huevas" (roe) is reserved for the collective mass as it is consumed in gastronomy. That's why we say salmon roe, hake roe, or cod roe, not "salmon eggs."
Depending on the species, roe also receives specific names: caviar (sturgeon), ikura (salmon, in Japanese), bottarga (mullet or tuna, cured), tarama (cod), or masago and tobiko (capelin and flying fish). That is to say: "roe" is the family; each proper name is a member of that family.
Nutritional value of roe
Fish roe is a superfood in the most literal sense. It is designed by nature to contain all the nutrients necessary to create a new living being, making it one of the most concentrated nutritional sources available.
- Omega-3 (EPA and DHA): Roe contains between 2-4 g of omega-3 per 100 g, in the form of phospholipids, which are absorbed better than the omega-3s in fish oil (triglycerides). Recent studies suggest that the omega-3s in roe have 2-3 times higher bioavailability.
- Proteins: between 22-30 g per 100 g, with a complete amino acid profile.
- Vitamins: rich in B12 (up to 20 μg/100g, 800% of the RDA), vitamin D (up to 232 IU/100g), vitamin A, and vitamin E.
- Minerals: selenium, zinc, iron, phosphorus, and iodine in significant amounts.
- Choline: one of the richest foods in choline, an essential nutrient for brain and liver function.
The calorie content is moderate (140-250 kcal/100 g depending on the variety), and the sodium content is high in cured or salted products, something to consider if you are monitoring salt intake.
How to serve and enjoy roe
Each type of roe has its ideal consumption context. Here are the recommendations by variety:
Caviar and premium roe
Serve alone, chilled, on ice. Accompany with warm blinis, crème fraîche, chopped chives. Pair with: brut champagne, iced vodka, reserve cava. Never use a metal spoon (it alters the flavor). The ideal temperature is between 0 and 4 °C.
Salmon roe (ikura)
On sushi (gunkan maki), in donburi (rice bowl), on toast with cream cheese and dill, as a garnish for cold soups (vichyssoise, gazpacho). Also spectacular on creamy scrambled eggs or on a smoked salmon tartare.
Tobiko and masago
As a topping for maki rolls, in salads, mixed with mayonnaise for sushi sauce, as a decoration for canapés. Wasabi tobiko is excellent on tuna tartare.
Bottarga
Grated over pasta (spaghetti with garlic, oil, and grated bottarga is a sublime dish), in thin slices over salad, on bread with tomato and oil. Bottarga is never cooked: it is grated or sliced over the finished dish so that the heat does not destroy its delicate flavor.
Cod and lumpfish roe
In canapés, on toasted bread with butter, in salads, as a component of Greek taramosalata. These are the most versatile roe for daily use because their mild flavor does not overpower the dish.
Preservation and storage
Proper preservation of roe is essential to maintain its quality. Cold is the indispensable ally, but each type has its peculiarities:
- Fresh caviar (unpasteurized): between -2 and 0 °C. Once opened, consume within 2-3 days. Never freeze (it destroys the texture of the grains). Store in the coldest part of the refrigerator or on ice.
- Pasteurized caviar: in the refrigerator, unopened, it can last for months. Once opened, consume within a week.
- Salmon roe (ikura): in the refrigerator, 5-7 days. It can be frozen for up to 3 months without significant loss of quality (ikura's membrane withstands freezing well). Thaw slowly in the refrigerator.
- Tobiko and masago: in the refrigerator, 7-10 days once opened. Freezing possible for up to 6 months.
- Bottarga: whole and vacuum-packed, up to 6 months in the refrigerator. Once opened, wrap in cling film and consume within 2-3 weeks. It can also be frozen for direct grating (it grates better when frozen).
- Canned roe (lumpfish, cod): follow manufacturer's instructions. Once opened, consume within 3-5 days.
General rule: roe should never be at room temperature for more than 30 minutes. If serving as an appetizer, place it on a bowl with crushed ice to maintain the cold chain during service.
Discover our selection of premium salmon roe and gourmet preserves at Bacalalo, where you will find selected products so you can explore the fascinating world of roe with the highest quality and freshness guarantee.
Discover our premium selection
Seafood selected with discernment since 1990 at Mercat del Ninot, Barcelona. Refrigerated shipping in 24-48h.
Conclusions
- What is fish roe?: Fish roe are the eggs produced by females of different marine and freshwater species.
- Types of roe: a complete guide: Fish roe can be classified by species, size, preparation method, or price.
- Sturgeon caviar: the king of roe: The term caviar, in a strict sense, only applies to the roe of sturgeon (Acipenser), a prehistoric fish that has been on Earth for 250 million years.
- Salmon and trout roe: ikura and more: Salmon roe is probably the most popular roe in the world after caviar.
- Tobiko, masago, bottarga, and other varieties: Tobiko is the roe of flying fish (Exocoetidae), very popular in Japanese cuisine.
Frequently Asked Questions
What is the difference between caviar and fish roe?
Strictly speaking, caviar refers only to sturgeon roe. Everything else is "roe of" followed by the species (salmon roe, trout roe, lumpfish roe). Some countries allow the use of "caviar" followed by the species name (salmon caviar), but the most correct denomination reserves the term exclusively for sturgeon.
Is fish roe healthy?
Very healthy. They are rich in omega-3 (in the form of phospholipids, with better absorption than fish oil), complete proteins, vitamin B12, vitamin D, selenium, and choline. The only thing to watch out for is the sodium content if they are cured or salted, and cholesterol, although recent studies suggest that dietary cholesterol has less impact on blood cholesterol than previously thought.
Can roe be frozen?
It depends on the type. Salmon roe (ikura) freezes well for up to 3 months. Tobiko and masago, up to 6 months. Fresh sturgeon caviar should not be frozen because the membrane breaks and loses its texture. Bottarga freezes perfectly and actually grates better when frozen.
Which roe is best for sushi?
For gunkan maki: ikura (salmon roe). For uramaki topping: tobiko or masago. For roe sashimi: wild salmon ikura marinated in soy. Wasabi-flavored tobiko is excellent for spicy tuna rolls.
How much does fish roe cost?
The range is enormous: from €5-10/jar for lumpfish roe to €3,000-8,000/kg for Beluga caviar. Good quality salmon roe costs €80-150/kg, tobiko €40-80/kg, and mullet bottarga €150-300/kg. To start, salmon roe offers the best quality-experience-price ratio.
Is lumpfish roe caviar?
No. Lumpfish roe is dyed black to mimic the appearance of caviar, but it does not have the same texture, flavor, or complexity. It is a valid and inexpensive product for decorating and adding a marine touch, but it is not caviar nor does it pretend to be. If the package says "lumpfish caviar," it is a commercial designation, not a correct classification.
How do I know if the roe is fresh?
Fresh roe should have well-defined individual grains (not crushed or broken), a clean sea smell (never strong fish or ammonia), bright and uniform color, and when tasted, it should pop in the mouth, releasing a clean liquid. If it is sticky, opaque, or smells strong, discard it.
Can pregnant women eat roe?
Pasteurized or cooked roe is safe during pregnancy. Fresh raw roe (such as unpasteurized ikura or fresh caviar) is discouraged due to the risk of listeria, as is any raw animal product. Always consult your doctor for personalized recommendations.
What types of roe are there?
Hake roe: has a soft and tender texture; as well as an intense sea flavor. ... Mullet roe: also known as "The caviar of the Mediterranean." ... Tuna roe: obtained from the largest tuna specimens, which is why they are usually the largest fish roe.
What are the 3 types of caviar?
Which fish roe is the best?
Hake, lumpfish, and salmon roe are the best dietary sources of Omega 3, according to a study developed by researchers at the University of Almería (UAL).
Explore our selection of salmon roe and gourmet preserves at Bacalalo.
→ Prepare it with Bacalalo products: TANIT premium salmon roe | TANIT trout roe
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