🏡
Luparez Sourdough Fermentation Microbiology & Dough Viscoelasticity
Guide Circle
Home / Oven Thermodynamics / Steam Injection Enthalpy in Baking: Starch Gelatinization and Micro-Blister Formation
Oven Thermodynamics

Steam Injection Enthalpy in Baking: Starch Gelatinization and Micro-Blister Formation

Why trapping water vapor around loaves during the initial 20 minutes produces paper-thin shattering crusts.

By Gemma Sullivan, Hearth Specialist September 21, 2026 • 8 min read
Steam Injection Enthalpy in Baking: Starch Gelatinization and Micro-Blister Formation

Latent Heat Transfer and Delayed Crust Setting

Steam condensing upon cool dough surfaces transfers latent heat of vaporization, delaying crust setting while interior gases expand.

Glossy Liquid Film Starch Gelatinization

Surface starches absorb condensing moisture and gelatinize into a glossy liquid film that bakes into a crisp caramelized shell.

Trapped Micro-Bubbles and Blister Physics

Tiny trapped vapor bubbles within the gelatinized starch film expand into thousands of crisp micro-blisters under dry baking heat.

⚠️ Technical & Safety Verification

The empirical methods outlined in this study reflect verified sourdough fermentation microbiology & dough viscoelasticity protocols and field measurements. Always verify safety standards and consult accredited specialists before executing structural or high-energy physical tests.

← Return to Home Browse Full Archive →