Cold sauces & condiments
skordalia
σκορδαλιά · A classical Greek cold sauce and condiment made by pounding garlic into a starchy base (traditionally boiled potato or soaked bread) and emulsifying it with olive oil into a thick, pungent, garlic-forward cream. Served chilled or at cool room temperature as an accompaniment to fried fish, boiled vegetables, or grilled meats.
The formula
1:1:1.5–2 base : garlic : oil
500 g cooked potato (or 120 g dry bread + 300 g water) : 500 g garlic (≈40 medium cloves) : 750–1000 g olive oil. Lemon juice 15–30 g optional. Salt to taste. Yields ≈1.5 kg sauce. Scale by any unit; garlic defines the sauce — the 1:1 ratio with base is non-negotiable.
Identity
- Pounded, not blended — mortar grinding develops garlic flavor without heat, producing a superior paste no appliance matches
- Garlic dominates the sauce at roughly equal weight to the starchy base — this is not a background note
- Olive oil is emulsified in a slow stream, creating a thick, stable cream — not a loose dressing
- The starchy base (potato or bread) provides the emulsifying matrix; without adequate starch the sauce breaks
- Acid is a restrained finish, not a required component — traditional recipes often omit it entirely
Ingredients
| Base | boiled potato (russet or Yukon Gold) or soaked torn stale bread (country white) | Soak bread in cold water 30 min, squeeze completely dry. Potato must be cooked through, cooled, and passed through a ricer; work into garlic while still warm enough to hydrate fully. |
| Aromatics | garlic cloves, peeled | Not optional. Use 1 part garlic to 1 part base by weight. Green sprouts removed. Begin pounding with salt to draw moisture and aid grinding. |
| Fat | extra-virgin olive oil (good quality, fruity) | Add in an extremely slow, thin, continuous stream once garlic and base are combined into a rough paste. Emulsification forms during addition, not after. |
| Liquid | cold water or potato cooking water | Add only if paste is too stiff to incorporate oil. Start with none; add sparingly, one tablespoon at a time. |
| Acid | lemon juice or white wine vinegar | A squeeze at the end, tasting. Brightens but is not structural. Traditional recipes may omit entirely. |
| Seasoning | fine sea salt | Add to garlic during pounding to draw out juices. Adjust at the end. |
Method
- 1Pound the garlic with salt in a marble mortar using a wooden pestle until a smooth, wet paste forms — 3–5 minutes of steady grinding with no added liquid.Salt draws moisture from garlic cells; mechanical grinding ruptures allicin-containing vacuoles. A blender generates heat and produces an inferior, harsh paste. The mortar is irreplaceable.
- 2Add the starchy base (riced potato or wrung-dry soaked bread) to the mortar. Work it into the garlic paste with the pestle, pressing and folding, until a unified rough paste forms.The starch must hydrate and develop a cohesive matrix before oil introduction. Rushing this step results in a lumpy, broken sauce.
- 3Add the olive oil in an extremely slow, thin, continuous stream while continuing to work the pestle in a circular grinding motion, maintaining rhythm throughout.Oil-in-water emulsification requires gradual dispersion of fat droplets into the starch-water matrix. Adding oil too fast causes immediate separation.
- 4Adjust consistency with cold water one tablespoon at a time only if the paste resists incorporating oil. Work in all oil before adjusting.Liquid dilutes flavor; the sauce should hold a peak on the pestle before thinning. Thin only as needed.
- 5Taste and season with salt and a small squeeze of lemon or a few drops of vinegar if desired. Continue working for 1 more minute to develop a smooth, ribbon-like consistency. Rest 30 minutes before serving.Final homogenization develops texture; resting allows flavors to marry.
Techniques that matter
Mortar grinding (pounding)
Ruptures garlic cell walls without generating heat, preserving volatile sulfur compounds. Develops a superior paste compared to any mechanical method.
Slow emulsification
Oil-in-water emulsion stabilized by starch. Gradual incorporation allows the matrix to trap each droplet; speed of addition determines stability.
Starch gelatinization
Potato starch absorbs water and swells at 58–67°C, forming a gel network that thickens and holds fat droplets — the structural foundation of potato skordalia.
Variations & derivatives
PatatoskordaliaGreece (universal)
Made with riced potato as base. The most common modern preparation. Slightly lighter and smoother than the bread version.
PsomoskordaliaGreece (traditional)
Made with soaked and squeezed stale bread. The older, more austere version. Gluten provides an even more stable emulsion but a denser texture.
Skordalia with nutsGreece / regional
Ground walnuts or almonds added to the base, particularly in northern Greek versions. Nuts enrich the sauce and aid emulsification.
SkordiagliaSicily
Related but distinct — a garlic-wine sauce for pasta without the starchy base. A cognate demonstrating garlic's centrality across Mediterranean cooking, not a true skordalia.
Used in these dishes
Substitutions
- potato (base) → stale white bread, soaked and wrung dry — Bread is the original base in some regions. Gluten provides even more stable emulsification. Use 120 g dry bread rehydrated in 300 g cold water.
- mortar and pestle → food processor or blender — Mechanical blending generates heat that degrades garlic flavor and produces a gluey, broken texture. If unavoidable: pulse in very short bursts, add oil extremely slowly, expect inferior results.changes result
- extra-virgin olive oil → neutral vegetable oil or light olive oil — Acceptable for those who find strong olive oil overpowering but loses characteristic Greek character.
Troubleshooting
Sauce breaks and oil pools on top during or after emulsification
Oil added too quickly, or insufficient starchy base to absorb it. The matrix cannot trap droplets fast enough. → Remove to a bowl, mash in additional starchy base (more potato or soaked bread) gradually, and re-emulsify with a slow drizzle of oil. Prevent by adding oil very slowly.
Garlic tastes harsh, acrid, or metallic rather than mellow and aromatic
Garlic over-processed in a blender or food processor, generating heat and degrading allicin. Or not ground long enough in mortar. → Use a mortar. If remedy is needed: fold in more plain mashed potato to dilute harshness and let rest refrigerated for 2 hours for volatiles to mellow.
Sauce is too thick and stiff to spread
Too little liquid, or potato used cold without enough residual moisture. The starch matrix has tightened on cooling. → Work in cold water one tablespoon at a time, or thin with a spoonful of the liquid the accompanying fish or vegetable was cooked in.
Sauce tastes flat or one-dimensional
Acid absent, salt insufficient, or olive oil quality too neutral to carry aromatic character. → Add lemon juice gradually until brightness emerges. Increase salt. Taste the olive oil — if bland, finish with a drizzle of high-quality fresh oil.