Cold sauces & condiments
agliata
agliata · A cold emulsified garlic sauce from Piedmont — a thick, pungent condiment made by emulsifying prepared (blanched) garlic with extra-virgin olive oil, bound with either bread soaked in milk or egg yolk. It is the garlic counterpart to aioli, sharing its texture and technique but relying on whole garlic rather than garlic-infused oil.
The formula
1:3–4 garlic : oil by weight
Example for ~250 g: 60–80 g blanched garlic + 1 egg yolk (or 25 g bread soaked in 30 ml warm milk) + 180–200 g olive oil + salt. Scale by keeping garlic-to-oil ratio constant and adding emulsifier per 50 g garlic.
Identity
- Prepared garlic (blanched to control pungency), not roasted or fried
- Extra-virgin olive oil as the sole fat — no other oils
- A functional emulsifier: egg yolk or bread soaked in milk
- Served cold or at room temperature, never heated
- Properly emulsified — glossy, thick, and stable
Ingredients
| Base | raw garlic cloves, peeled | Use fresh, firm garlic. Older garlic turns greenish and bitter. |
| Fat | extra-virgin olive oil | Use a fruity, peppery EVOO — its flavor dominates the sauce. |
| Binder | egg yolk | Classic binder when not using bread; makes a richer, more stable emulsion like mayonnaise. |
| Binder | country bread, crustless, soaked in warm milk | Traditional Piedmontese binder: 25 g bread + 30 ml warm milk per 60 g garlic. Squeezed dry before adding. |
| Acid | lemon juice | A few drops brighten and slightly stabilize the emulsion. Common in modern versions; optional. |
| Seasoning | sea salt | Dissolved in the garlic paste before emulsification begins. |
Method
- 1Blanch the garlic in simmering salted water for 30 seconds, then drain and cool.Blanching deactivates garlic's alliinase enzyme, mellowing harsh pungency and preventing green discoloration while retaining flavor.
- 2Pound the cooled garlic to a smooth paste with salt in a mortar (or blend finely).A smooth, grit-free paste is essential — any garlic fragments survive the emulsification process and create an unpleasant texture.
- 3If using bread binder: soak bread in warm milk, squeeze dry, and work into the garlic paste. If using egg yolk: add the yolk directly to the garlic paste.The binder provides emulsifying proteins (egg yolk) or starch and gums (bread) to surround oil droplets and prevent separation.
- 4Add oil in a very thin, steady stream while whisking briskly — continuously, never stopping.Slow incorporation allows smaller oil droplets to form and be trapped by the emulsifier; fast addition or stopping causes the emulsion to break.
- 5Thin to proper consistency with 1–2 teaspoons warm milk or water if the sauce is too stiff; adjust salt and add a few drops of lemon juice if using.Even properly emulsified agliata should spread, not stack. Warm liquid reincorporates any slight separation and relaxes the texture.
- 6Transfer to a clean bowl, press plastic wrap directly on the surface, and refrigerate for at least 30 minutes.Resting allows flavors to meld and the emulsion to stabilize fully.
Techniques that matter
Emulsification
Oil-in-water emulsion where garlic paste or egg yolk coats tiny oil droplets, preventing coalescence. The ratio of emulsifier to oil is critical — too little emulsifier per fat, and the emulsion will not form.
Enzymatic control
Garlic's alliinase converts alliin to allicin when cells are damaged; blanching inactivates this enzyme, controlling pungency and color.
Mouthfeel development
Properly pounded garlic releases pectin and other polysaccharides that thicken and bind, contributing body beyond what the emulsifier alone provides.
Variations & derivatives
agliata piemontese classicaPiedmont, Italy
Uses bread soaked in warm milk as sole emulsifier. Coarser texture, more rustic. The traditional version before egg yolks became common.
agliata con nociPiedmont/Liguria border
Adds 20–30 g toasted walnuts or hazelnuts to the mortar — adds bitterness and textural contrast, common in rural versions.
modern raw-garlic sauceInternational
Uses raw (unblanched) garlic crushed with egg yolk and oil. Much punchier and more aggressive than traditional agliata; a common modern interpretation.
Used in these dishes
Substitutions
- egg yolk → bread soaked in milk, squeezed dry — Traditional Piedmontese substitution. Bread provides starch and gums but no richness; texture will be coarser.
- extra-virgin olive oil → mild olive oil or sunflower oil — Reduces garlic flavor dominance and produces a milder sauce. Not traditional but functional.
- blanched garlic → raw garlic — Skipping the blanch step yields a sharper, more pungent sauce. Use 30% less garlic for equivalent flavor with less bite.changes result
Troubleshooting
Sauce breaks (oil pools on surface)
Oil added too quickly, or insufficient emulsifier. → Start fresh with a new yolk or bread binder, add the broken sauce slowly to the new emulsifier while whisking vigorously — salvages most batches.
Garlic tastes harsh or metallic
Garlic not blanched, or sauce made with garlic that was too old. → Next batch: blanch garlic 30 seconds. To salvage current batch, whisk in a teaspoon of warm milk — dilutes but does not eliminate the harshness.
Sauce is too thick or glue-like
Too little oil added relative to emulsifier, or oil too cold. → Whisk in 1–2 teaspoons warm milk or water a little at a time until glossy and spreadable.
Grainy or gritty texture
Garlic not pounded smoothly enough; particles survived emulsification. → Pass finished sauce through a fine-mesh sieve, pressing with a spatula. Some body is lost but smoothness is regained.