Carob Powder (Best Option)
1:1 by volume (e.g., 1 tablespoon carob powder per 1 tablespoon cocoa powder)Carob powder is derived from the carob tree pods and has a naturally sweet, chocolate-like flavor with no caffeine or theobromine. It contains fiber and tannins that do not inhibit yeast activity, making it suitable for sourdough fermentation.
When substituting, maintain the same quantity by volume to preserve dough hydration. Because carob is sweeter and less bitter, monitor the overall flavor balance and consider reducing any additional sweeteners slightly.
The final bread will have a slightly different flavor profile—less bitter and more mellow—but the texture and rise will remain consistent with the original recipe using cocoa powder.