Try this Gluten-free Porridge Bread recipe, or contribute your own.
Why does a loaf containing zero wheat flour still rise and hold a cohesive shape? The answer lies in the interaction between dairy acids, bicarbonate of soda, and the starches inherent in rolled oats. When yogurt and milk introduce lactic acid to the batter, they immediately react with the alkaline bicarbonate of soda to release carbon dioxide bubbles, which are then trapped by the thick, gelatinous matrix formed as oats hydrate. Without traditional gluten strands to trap this gas, the eggs provide the necessary structural proteins that coagulate during baking to set the crumb. Processing the batter in a blender alters this texture significantly by breaking down large oat flakes into finer particles, yielding a denser, more uniform crumb structure rather than a rustic, chewy loaf.
Quick breads bypass yeast fermentation entirely, relying strictly on chemical leavening agents triggered by moisture and acidity. Yogurt supplies the requisite acid while adding moisture that keeps the heavy oat flour from becoming excessively dry. Precise measurement of the bicarbonate of soda is critical because an excess leaves a metallic, soapy taste, while too little results in a heavy, compact brick. Preheating the oven to 180 degrees Celsius ensures the thermal shock needed to immediately expand the trapped gas bubbles before the batter sets permanently.
Determining when a dense loaf is finished baking requires physical cues rather than digital gadgets since internal thermometers can yield inconsistent readings in heavy grain mixtures. Removing the loaf from its one-pound tin after fifty minutes and returning it directly to the wire oven rack exposes the bare sides to dry heat, forming a crisp, uniform crust across the entire exterior. Tapping the bottom of the loaf should produce a hollow sound when moisture has sufficiently evaporated from the center. Letting the bread cool completely on a rack allows the starches to fully retrogradely set, preventing the interior from crumbling excessively when sliced.