It would also increase farm income, and encourage people to remain in farming. Professor Chiang has tried a number of experiments, and has found that color, as well as taste, is an important factor. The greatest obstacle remains the appearance and taste of sandwich bread made of sweet potato flour.
台鳳罐頭公司曾製造紅心甘薯罐頭，內容是以紅心甘薯切塊煮熟，加鳳梨汁調味，吃過的人都說味道好。