We used 4 cup Ziploc bowls with cozies made from reflectix. I brought an extra one for our Ranger. They worked great.
Scouts split the meals before then put in boiling water (Reactor stoves). We didn't measure but had the Scouts put in water until it was about 2 inches above the amount of food they had. If it looked like not enough water it was simple to add some more later (also gave an extra shot of heat to the meal).
Meals stayed hot until they read to eat. Using Reactors and Cozy we never had any almost burned, lost of hot water situations.
Before cleaning most of the Scouts and Adults would put in a small amount of hot water and then drink the dregs. Some added Cider to the mix…
For sterilizing and cleaning we used a Philmont, 8 quart pot, it was part of the three pot kit they had. Pot could fit easily in a pack and we could get our bowls just into the pot for cleaning and pre steriling.
For cleanup we used paint filters.
For spoons we tried McFlurry spoon,99c Soup Spoon at Philmont, and the Campware long spoon. Those that had the McFlurry spoon tossed them and bought camp spoons since they couldn't keep their McFlurry clean.