Adam Clarke on Exodus 16:3

The flesh pots - As the Hebrews were in a state of slavery in Egypt, they were doubtless fed in various companies by their task masters in particular places, where large pots or boilers were fixed for the purpose of cooking their victuals. To these there may be a reference in this place, and the whole speech only goes to prove that they preferred their bondage in Egypt to their present state in the wilderness; for they could not have been in a state of absolute want, as they had brought an abundance of flocks and herds with them out of Egypt.