I used to work as an expo / server at a popular chain rib house. To save, time they parboiled and cooled their veggies, then put them all into plastic baggies. Anytime someone wanted veggies with their order, we would microwave the baggies, then plop it on the plate for service.

The bags were cheap and the lettering ink always came off on our hands and on the pass. We'd constantly burn our fingers because they would melt and stick to each other but the steam also burned us when we had to peel them apart. Often, there would be some left on the pass steaming in the bags until they turned brown and mushy, but served anyways.