What You Need to Know
The amylose and amylopectin from stale bread granules swell during hydration, forming a gel network that stabilizes the oil droplets. Pectin and hemicellulose from bread crust contribute to viscosity. Garlic and olive oil's allicin and polyphenols act as natural emulsifiers.
Used in Spanish salmorejo to achieve a velvety texture without eggs. In Provençal rouille, bread helps stabilize the saffron-infused oil against breaking. Stale bread's reduced moisture content prevents doughiness while maximizing starch availability.
Key Parameters
Temperature
°C - °C
Time
30-60 min
5 min (industrial high-shear) - 24h (traditional slow hydrate)
Equipment
Mortar & pestle (traditional)High-shear blender (modern)Tamis sieve (for ultra-smooth)
Steps
- 1.
Salmorejo Cordobés
- 2.
Rouille
- 3.
Skordalia
The Science
Primary Reaction
Starch gelatinization (60-85°C) + Pickering stabilization