Rigging equipment for steaming large amounts at once I am making steamed BBQ pork buns for a work potluck. I have some steamer equipment, but small scale.  I'm looking at making 60+ buns, and would really like to cook them as quickly as possible the morning before I go to work.

How can I create a large steamer setup?  I thought my rice cooker and instant pot could be put to use as steamers. It is a standard large office setup, so not sure if the humidity from the steam would be a problem.
Assuming that you're planning to do the steaming at home (your question is kind of confusing that way), the cheapest way to go is to create ad-hoc "steam ovens" using disposable aluminum foil pans.


Buy some disposable aluminum foil baking pans, as large/deep as possible, like a 20" x 12" x 3.5" pan.
line the bottom of these with cookie cooling racks (if you don't have these, use an appropriately-sized disposable rimmed cookie sheet and punch holes in it).
pour in a little bit of water, below the tops of the racks.
put in the buns (should hold a lot of them in each pan)
seal tightly with extra-wide, heavy-duty foil on top.
bake in your oven at 350F


Now, the catch to this is that the cooking time will be different than it would n a regular steamer, because you're getting some heat from the top, and I don't have a ready conversion for you; you'd have to test a bit.

If this is something you do a lot, I'd recommend buying a Thai/Vietnamese-style multi-level steamer, which would allow you to steam batches of 12 to 30 buns pretty rapidly.  You can buy these steamers at Asian grocery stores a lot cheaper than you can find them online.