Hi.
I generally keep my slaw in a half size pan(s) in the fridge. I keep my beans on the steam table. After months of trying to devise a way to package my food, I had to resort to a hated method. Styrofoam. I did not want to use styrofoam. I dislike it intensely. I did come up with a styrofoam that I liked. It is a Genpak snap it product, but the difference is that it is black. It shows no smoke discoloration or BBQ orange on the boxes. At any rate, the dinner boxes come with the portioned compartments. Perfect size for sides. I also sell sides in portion cups. They are 4.5 or 5.5 in size (can't recall). Since space is always at a premium in my reefers, I do not preportion them out, but I have considered it for the slaw. I just never get around to it. Even when I am at my busiest it is never too big a deal to portion out the slaw or beans. I guess the downside might be if you preportion and do not use the containers you then have a dating issue. For a very large event I am considering doing a specific amount of preportioning for convenience sake, but only an amount that I feel comfortable about selling for sure. I don't eat slaw, but I think it should be pretty fresh. I make it the night before, hope to use it all that day, maybe use it a second day if it looks good, but never more than that. Darn beans just seem to get better with time though. But, my beans sell like crazy, I have an order tomorrow for two gallons! Hard to keep them going.
That is how I do it. That is what works for me. What works for me might work for you ... or maybe not! My way may not be the best way, but as I said, it works for me.
Best of luck to you!
Kate