I grow Great Northern white beans. They are pure white and are a very nice bean for soups. My DIL makes ham and bean soup using them and it's very good, and they work nice for vegetable soup, too. I let them dry as much as possible on the vine, then shell with a pea sheller on a chordless drill and run them through the dehydrator lightly (one damp bean will ruin a whole lot). I use old plastic containers like party mix comes in for short term storage. I throw them in the freezer dry for long term. Culturally, I grow them in rows in plastic with drip irrigation tape underneath, an inch to inch and a half between plants. A little late season trellising will help keep low hanging pods from getting wet and spoiling the beans in them. They sprout quickly with a little moisture.