Silkworms, on the other hand, are themselves natural fermentation tanks. Not only are they inexpensive (just NT $ 0.2-0.3 each), they also produce a higher-quality protein.
而家蠶本身就是一個天然的生物發酵槽，不僅成本低廉（一隻才二、三毛錢），生產出來的蛋白質品質也較佳。