cook · side · spanish

How to Make Romesco Sauce

Name: How to Make Romesco Sauce
Cuisine: spanish

This Catalonian sauce transforms a handful of charred vegetables into something that makes everything else on the plate taste better. The key is getting real char on the peppers and tomatoes — not just roasting them, but blackening the skins until they taste like they've been kissed by fire.

Total time: 45 min
Hands-on: 30 min
Serves: 8
Difficulty: Easy

Before you start

Char the vegetables properly — burned skins mean smoky flavor

You want actual black char on the pepper and tomato skins. If using a gas burner, turn the flame high and rotate frequently. The goal is blistered, blackened skin that peels away easily.

food processor or blender
gas burner or broiler
large skillet

Ingredients

2 large red bell peppers
1 large tomato
3 cloves garlic, unpeeled
1/2 cup blanched almonds
1 slice day-old bread, crusts removed
2 tbsp sherry vinegar
1/2 tsp smoked paprika
1/4 tsp cayenne pepper
1/3 cup extra-virgin olive oil
1 tsp salt

The char

Burn the skins, not the flesh

Hold the peppers and tomato directly over a gas flame with tongs, turning every minute or so. The skins should blacken and blister while the flesh underneath stays firm. This char is what gives romesco its distinctive smoky backbone.

Step by step

Char the vegetables. Hold each red pepper over a high gas flame with tongs, turning every minute until the skin is completely blackened and blistered. Do the same with the tomato. If using a broiler, place vegetables on a sheet pan 4 inches from the heat and turn frequently. The skins should be mostly black.
Steam and peel. Place the charred peppers and tomato in a bowl and cover tightly with plastic wrap. Let steam for 15 minutes. Peel away the blackened skins — they should slip off easily. Remove seeds from peppers and roughly chop both peppers and tomato.
Char the garlic. Place unpeeled garlic cloves in a dry skillet over medium heat. Cook, turning occasionally, until the skins are spotted brown and the cloves feel slightly soft, about 8 minutes. Let cool, then peel.
Toast the almonds. In the same skillet, toast almonds over medium heat, stirring frequently, until golden brown and fragrant, about 5 minutes. Let cool.
Toast the bread. Tear bread into chunks and toast in the skillet until golden on both sides, about 3 minutes total. Let cool.
Blend the sauce. In a food processor, pulse almonds and toasted bread until finely ground. Add charred peppers, tomato, garlic, vinegar, paprika, and cayenne. Process until mostly smooth. With machine running, slowly drizzle in olive oil until you have a thick, spreadable consistency. Season with salt.
Adjust and rest. Taste and adjust with more vinegar for brightness or salt for depth. Let sit at room temperature for 30 minutes before serving to let flavors meld.

Tips & troubleshooting

The sauce keeps in the fridge for a week and actually improves after a day
If your food processor struggles, add vegetables in batches and combine at the end
Day-old bread works better than fresh — it absorbs less oil and adds better texture

Variations

Hazelnut Romesco. Replace almonds with toasted hazelnuts for a richer, more buttery flavor
Spicy Romesco. Add a whole dried ñora pepper (or chipotle) when charring vegetables
Roasted Garlic Version. Roast a whole head of garlic in olive oil instead of charring individual cloves

Questions

Can I make this without a gas burner?: Yes, use your broiler on high. Place vegetables on a sheet pan 4 inches from the heat and turn every few minutes until charred all over.
Why is my romesco bitter?: You likely over-charred the vegetables or didn't remove enough of the blackened skin. Some char is essential, but burned flesh tastes bitter.
How thick should the final sauce be?: Think thick barbecue sauce consistency — it should coat a spoon but still drop off in ribbons. Add water if too thick, more oil if it seems dry.