豆腐不需要蒸太久，蒸久会老。<ref>[https://gimg2.baidu.com/image_search/src=http%3A%2F%2Fbkimg.cdn.bcebos.com%2Fpic%2F1ad5ad6eddc451da81cbcf527fb74566d0160924947d&refer=http%3A%2F%2Fbkimg.cdn.bcebos.com&app=2002&size=f9999,10000&q=a80&n=0&g=0n&fmt=auto?sec=1671592846&t=a62a03bb662d2d847719d517922557b7 三丁蒸豆腐], 360国学 ,</ref>

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