Chocolate Nut Bread

The bread sponge (a pre-fermented mixture of flour, water, and yeast) provides developed gluten structure and complex flavor from extended fermentation. Unsweetened chocolate adds fat that tenderizes the crumb while cocoa solids contribute rich flavor and dark color. The minimal sugar keeps the bread savory rather than sweet, making it suitable for sandwiches. Broken walnuts create texture pockets without interfering with gluten development the way finely chopped nuts would.