Summary
The anchovy and butter toast is probably the simplest and most overrated combination in Spanish gastronomy. In this guide: Why butter and anchovies are perfect together, Ingredients for 4 people, Step-by-step: the perfect toast.
The anchovy and butter toast is probably the simplest and most overrated combination in Spanish gastronomy. Simple because it has three ingredients. Overrated because, with mediocre ingredients, the result is disappointing, and you don't understand why anyone would put it on a menu. With quality ingredients, it's one of the best things you can eat in ten minutes.
This recipe is what we make at Mercat del Ninot when we want to show someone what a good Cantabrian anchovy is like. There's no trick possible: butter and bread amplify, they don't hide. If the anchovy is good, you'll notice it. If it's not, you'll notice that too.
Why butter and anchovies are perfect together
The combination is not by chance. It has a very specific chemical and sensory logic.
Cured Cantabrian anchovies have three dominant characteristics: intense salinity, concentrated umami (glutamate and inosinate developed during salting), and a complex profile of polyunsaturated fat. Butter has a smooth saturated fat, lactic notes, and no salinity if it's unsalted butter.
When the two fats coexist in the mouth, the following happens: the butter fat acts as a vehicle and amplifier for the aromatic compounds of the anchovy, extending the perception of flavor on the palate. At the same time, the lactic protein in the butter moderates the anchovy's salinity, preventing salt from being the dominant flavor. The result is a flavor experience where the complexity of the anchovy is perceived in more detail and for longer than would be possible if the anchovy were alone.
This explains why anchovy toast with butter works better than the same anchovy on bread with olive oil: the oil competes with the anchovy's fat instead of complementing it. Butter yields the spotlight; oil fights for it.
Ingredients for 4 people
- Bread: 4-8 slices of sourdough bread about 1.5 cm thick, or dense rye bread. Conventional baguette is acceptable but yields a noticeably inferior result.
- Butter: 60-80g of quality unsalted butter (Président, Kerrygold, or any butter with a high fat percentage, minimum 82%). Unsalted is mandatory: the anchovy already has all the necessary salt.
- Anchovies: 12-16 Cantabrian anchovy fillets in olive oil (3-4 fillets per toast). Double-zero ("00") selection for this recipe; zero ("0") caliber works but the visual presence and flavor are reduced.
Optional ingredients for variations:
- Maldon sea salt flakes (for the basic version, a finishing touch if the anchovy has mild saltiness)
- Freshly ground black pepper (minimum amount, not the main flavor)
- A few slices of black truffle or truffle oil (for the truffle variation)
- 2-3 quail eggs (for the egg variation)
- Fresh or pickled chili (for the spicy variation)
Step-by-step: the perfect toast
- Soften the butter. Take the butter out of the fridge 30-45 minutes before preparing the toasts. It should be at room temperature: soft, but not melted. If it's cold, it will tear the bread when spread and won't create the uniform layer we need. If it's melted, it will be absorbed by the bread instead of staying on the surface.
- Take the anchovies out of the fridge. At the same time as the butter, take the anchovies out of the refrigerator. Cold anchovy fat is partially solidified, which toughens the fillet, dulls the flavor, and removes its characteristic shine. 20-30 minutes at room temperature is enough to restore the optimal texture.
- Toast the bread. Use a toaster, a griddle, or the oven's grill function. The goal is to achieve a crispy crust on the outside and maintain a slightly soft crumb on the inside. The toasting level should be medium-high: enough for the slice to be rigid and support the weight of the butter and anchovy without softening, but without charring. In a toaster: full cycle on level 4/5. On a griddle: 2 minutes per side over medium-high heat.
- Spread the butter. While the toast is still warm, spread a generous layer of soft butter. The correct amount is enough to evenly cover the surface with a thickness of 2-3mm, without accumulating in the corners. The residual heat of the bread will slightly melt the butter but not eliminate it: a thin, shiny layer will remain. If the bread is cold before spreading, the butter will not adhere well and will fall off when bitten.
- Arrange the anchovies. Three or four fillets per toast, arranged parallel along the length of the slice. Don't pile them up: leave a small space between fillets so that the butter is visible and the visual balance is clean. If the fillets have deformed in the jar or can, gently stretch them with your fingertips before placing them.
- Serve immediately. Anchovy and butter toast is a dish for immediate consumption. After 5 minutes, the bread loses its crispy texture and the butter is completely absorbed. If you are preparing them for several diners, make them in batches, not all at once.
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Variations: with truffle, with quail egg, with chili
The basic toast is perfect as is, but it allows for three variations that elevate it without distorting the original concept.
With black truffle: Add 3-4 very thin slices of fresh black truffle (Tuber melanosporum) over the anchovies just before serving. Alternatively, mix soft butter with a few drops of truffle oil (very few: it's a dominant ingredient) before spreading it. Truffle and anchovy share a deep umami profile and fermented notes, and they mutually enhance each other. The result is a toast with disproportionate flavor intensity compared to its apparent simplicity.
With quail egg: Fry 2-3 quail eggs in very little butter over medium heat, leaving the yolk runny. Place the eggs over the anchovies. When the yolk breaks upon eating, it mixes with the butter and further softens the anchovy's salinity, adding a note of mild fat that completes the ensemble. This variation is heartier, more suitable as a main course than an appetizer.
With chili: Add 2-3 thin slices of fresh chili (not too spicy: choose a 3/10 spice level on a personal scale) or a strip of pickled chili. The acidity of the pickled chili cuts through the butter's fat and refreshes the overall flavor. The mild spice complements the anchovy's salinity. This variation is a deconstructed gilda on toast, and it works equally well.
What anchovy to use: Double-zero ("00") selection or standard
For this recipe, the double-zero ("00") caliber yields a clearly superior result to the zero ("0") caliber. The reason is simple: in a three-ingredient toast, the anchovy is the main flavor and texture element, and its visual presence matters as much as its taste.
A double-zero fillet covers a 7-8 cm slice of bread well, has its own visual presence, and its meaty texture noticeably contrasts with the creamy butter. Three well-arranged double-zero fillets make a serious toast. Four zero-caliber fillets in the same space pile up visually and lose the dish's elegance.
Our Cantabrian double-zero ("00") Selection Gourmet anchovies are specifically the product we recommend for this recipe. The caliber is verified, the oil is extra virgin olive oil, and the flavor profile has the complexity needed for the toast to be a benchmark dish.
If budget is a factor, zero-caliber works correctly and makes a good toast. The difference is noticeable but not dramatic if the anchovy is of good quality. What never works is an anchovy in sunflower oil or of uncertain origin: in such a simple preparation, the mediocrity of the ingredient has nowhere to hide.
Pairing: white wine, txakoli, brut nature cava
Anchovy and butter toast has three characteristics that guide pairing: high salinity, significant fat, and concentrated umami. The wines that work best are those with high acidity and pronounced minerality, which cleanse the fat with each sip and highlight the anchovy's saline complexity.
Txakoli from the Basque Country (Getariako Txakolina, Bizkaiko Txakolina) is the geographically logical and gastronomically correct pairing. Its sharp acidity, slight natural effervescence, and iodized and citrus notes perfectly contrast with the butter's fat and the anchovy's salinity. Txakoli poured from a height, with its characteristic tiny bubbles, is the classic accompaniment to gildas and anchovy toasts on the Basque coast.
An Albariño from Rías Baixas works similarly: high acidity, saline minerality typical of coastal grapes, freshness that cleanses the fat. Less traditional than txakoli for this use but equally effective.
Brut nature cava is the sparkling alternative. The cava bubbles do the job of cleansing the butter fat with each sip, and the acidity of the zero dosage (brut nature, without expedition liqueur) adds no sweetness that would compete with the anchovy's salinity. It is the most elegant option for a formal presentation or tasting.
What doesn't work: red wines with tannins (tannin and anchovy fat create an unpleasant metallic sensation), very sweet white wines (the sweet-salty contrast can work in theory but is a risky pairing for this specific preparation), and very hoppy beer (the bitterness of hops clashes with the anchovy's umami).
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Frequently asked questions
Can the toast be prepared with margarine instead of butter?
We do not recommend margarine for this recipe. Margarine has a different fat profile, artificial flavor notes, and a mouthfeel that does not complement the anchovy in the same way as butter. The result is a toast that tastes of generic fat, not the butter-anchovy balance that makes the dish. If the reason is lactose intolerance, clarified butter (ghee) works reasonably well as a substitute.
Should the butter be salted or unsalted?
Unsalted, always. Cantabrian anchovies already provide all the necessary salinity and, in most cases, more than enough. Using salted butter oversaturates the dish with salt and makes it impossible to perceive the nuances of the anchovy's flavor. Unsalted butter provides fat and lactic notes without interfering with the saline balance.
What kind of bread works best for this toast?
Sourdough bread with mild acidity is the best base: it has enough structure to hold the weight of the ingredients without softening, a dense crumb that doesn't absorb all the butter in seconds, and a crust that stays crispy for longer. Dense rye bread is the second option, with a more pronounced flavor profile that complements the intensity of the anchovy well. Conventional baguette bread works but softens quickly. Avoid very fluffy or open-crumb breads: they absorb butter like a sponge and the toast becomes pasty.
Can it be prepared in advance?
Not to be served with the best result. The toast loses its crispy texture within minutes of being spread with butter. If you need to prepare it in advance for an event, you can toast the bread, warm the butter, and have the anchovies at room temperature separately, then assemble at the last minute before serving. The assembly process takes no more than 2 minutes.
How many toasts can be eaten as an appetizer?
As an appetizer before a meal, one or two toasts per person is the correct amount. As a light meal or brunch, three or four. The butter + anchovy combination is calorically dense and satiating, and the flavor is very intense: more than four toasts in a row will saturate the palate.
Ready to prepare the perfect toast? Start with the most important ingredient: visit our selection of Cantabrian anchovies at Bacalalo.com and choose the ones that will star in your next toast.
