As a snack to fill me up or just a lazy, quick meal sometimes I'll just eat a can of plain beans. Lately I started cooking my own beans, but they don't taste the same plain. I drained them and the cans usually have juice, is this why? But also they don't have any flavor to them. So far I've tried pinto plain, but I also want to try making black beans and lentils, so any help on seasoning those would be appreciated, too. Do I have to salt them or something when they're cooking to make them taste like a plain can of beans? Also, is the liquid at the end supposed to be drained or is the foam just supposed to be skimmed off?