Beans, beans, beans. Lentils, butter beans, dried peas. The best nutritional value, will keep a long time. It’s BEANO that’s expensive.
I wonder if you could make a beano starter?
If you parboil the beans, rinse them, then soak them overnight in fresh water, you will find they lose a lot, but not all of the gassiness.
Also, if you make a vow to eat beans regularly, and I mean at least every other day, you will develop the digestive enzymes on your own, and you won’t find that they make you uncomfortable. We learned that from experience.
Stay with the garbanzos and lentils until you develop the enzymes before branching out into the red beans...