I’m thinking of getting into Japanese curry. I always bought the prepackaged curry, but the blocks are apparently cheaper in the long run Read the ingredients. Though they might be vegan ( a number of them aren’t ) they aren’t the kind of things you want to put into your body more than occasionally. Frozen potatoes You can poke holes in raw potatoes with a fork, put them in a microwave, and have them ready in about 6 minutes. I haven’t compared prices myself, but you might want to. It seems like raw potatoes would be cheaper.