Making Bao Bun but with a slow rise over long time? in Pastry & Baking Posted September 21, 2018 Hello, i would love to make Custard filled Bao Bun tomorrow. But as timing wants it i would need to leave the yet to be steamed bun unattended for around 3 hours. All the recipes i could find ask for a quite warm rise of the dough for only approximately 1 hour. is anyone experienced or has a recipe by hand with a slower but longer rise? I know, putting the dough in a colder place or refrigerator should work, however, as timing is crucial i wanted to ask you for experiences. thanks a lot!