How to make quick-frozen steamed stuffed bun semi-finished products

Hello, the semi-finished products of quick-frozen steamed buns are divided into manual production and machine production. Either way, yeast, foam source and strength source D should be added to the dough. Machine-made steamed buns need "post-fermentation". Yeast and foam source can be used together for fermentation, and power source D can be added to quick-frozen steamed buns to prevent freeze cracking and dehydration.