Sauces — Alioli & Romesco
Spanish Cookery
Chapter 9 · Sauces: Alioli & Romesco
Two more sauces, two more genuinely different building logics — one an emulsion held together without egg at all, the other thickened by neither an emulsion nor a roux, but by ground nuts and bread.
Alioli: Garlic and Oil, Nothing Else
The name itself — all i oli, Catalan and Valencian for "garlic and oil" — says exactly what traditional alioli is: garlic, olive oil, and a little salt, with no egg at all. Every bit of the emulsion's own stability comes from the garlic itself, worked patiently into the oil.
- Pound garlic and salt into a fine paste In a mortar, working the pestle until there's no trace of a distinct garlic piece left.
- Add olive oil drop by drop Genuinely drop by drop at first, working each addition fully into the paste with a smooth, circular motion before adding the next.
- Add slightly more oil at a time as it stabilizes Once the mixture visibly thickens and holds together, larger additions of oil become safer to add without breaking the emulsion.
A Real Contrast With French Cookery's Own Emulsions
| Hollandaise (French Cookery) | Traditional Alioli | |
|---|---|---|
| Emulsifier | Egg yolk lecithin — reliable, well understood | Garlic's own compounds alone — genuinely less predictable |
| Real difficulty | Needs heat control to avoid scrambling the yolk | Needs patience and slow, careful oil addition throughout |
Worth knowing honestly: much of the "aioli" served today, especially outside Spain, does include egg yolk — closer to a garlic-forward mayonnaise than the traditional egg-free version this chapter teaches. Both are real, legitimate versions of the same idea; they just trade off difficulty against reliability in opposite directions.
Romesco: Thickened by Neither Roux Nor Emulsion
Romesco, from the Tarragona region of Catalonia, builds its body a third, completely different way — from roasted nyora peppers (a small, round, dried Spanish pepper — a substitute like dried ancho or roasted red pepper works if nyoras aren't available), roasted tomato and garlic, toasted almonds and/or hazelnuts, bread, olive oil, and sherry vinegar (Chapter 1's own defining acid, once again).
Everything is blended or pounded together until smooth. The sauce's own real thickness comes from the ground nuts and bread — genuine solid bulk, not an emulsion holding oil in suspension the way alioli does, and not a starch-based roux the way Chapter 7's croqueta béchamel does.
| Sauce | What gives it body |
|---|---|
| Croqueta béchamel (Ch. 7) | A roux — flour cooked into fat, then thickened with milk |
| Alioli | An emulsion — oil suspended in tiny droplets, held by garlic alone |
| Romesco | Ground nuts and bread — real solid bulk, not an emulsion or a roux |
Kitchen Practice
Quick Reference — Alioli & Romesco
- Traditional alioli: garlic, olive oil, and salt only — pounded and slowly emulsified, no egg
- Genuinely trickier than French Cookery's egg-based hollandaise, since garlic alone is a less reliable emulsifier than lecithin
- Modern "aioli" often adds egg yolk for reliability — a legitimate, but different, version of the same idea
- Romesco: roasted nyora peppers, tomato, garlic, toasted nuts, bread, olive oil, sherry vinegar — thickened by ground solids, not an emulsion or a roux
- This course's own three sauce logics side by side: roux (Ch.7), emulsion (alioli), ground nuts and bread (romesco)