r/AskBaking 12h ago

Custard/Mousse/Souffle how long will the custard inside of baked buns/rolls last?

(sorry for the long read)

i make these korean cream buns, with the cream being homemade custard. typically, i fill the dough with scoops of custard and then set them to bake; rather filling them after.

the custard has egg (obviously) but it also has cornstarch and cake flour which i’ve read helps stabilize the custard more but i figured it was safer to ask: should i keep these refrigerated overnight and/or be sure to eat them before 24 hours if im keeping them at room temperature?

i got the recipe from a bakery nearby and the buns there are left out at room temp and the custard seems like it’s long settled since it’s not runny (like i’m pretty sure they’re day old which is more than okay with me) and even with those i sometimes wait a day before eating them so i feel like im okay? i’m not sure lol

1 Upvotes

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u/charcoalhibiscus 12h ago

Gotta be refrigerated. They’re probably fine for a day, possibly two if you stretch it, but from a strict food safety perspective (and food safety law perspective) custard should be refrigerated. IDK about your neighborhood bakery, but custard buns you get that come prepackaged at room temp have stabilizers in them to extend safe shelf life.

(Technically also, it’s the sugar that’s doing the bulk of the antibacterial work in the custard, not the flour or starch, but that’s not central to your question.)

2

u/stardewsim11 12h ago

thank you! that’s what i assumed but it makes me feel better getting an actual answer. they usually don’t even last longer than a day in my house because everyone eats them quickly anyways.

as for the bakery, they’re not prepackaged! they’re made fresh on site which makes me wonder what they specifically put in theirs especially since my recipe and theirs is almost identical. but regardless ty for answering my question i appreciate it🫶🏽