A composite flour composition derived from taro (Colocasia esculenta) and lesser yam (Dioscorea esculenta) is disclosed. The present composition consists essentially of taro flour and lesser yam flour blended in predetermined ratios selected from about 25:75, 50:50, or 75:25. The composite flour preferably exhibits moisture content not greater than about 14% and water activity below about 0.60, contributing to improved storage stability and functional performance. The resulting flour composition may be used as a substitute for wheat flour in cake formulations while utilizing locally available root crops. The present disclosure addresses the need for a simple gluten-free flour formulation capable of serving as an alternative to wheat flour in bakery applications. Conventional gluten-free flour blends often require multiple ingredients or additives and may increase formulation complexity and cost.
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