Most important thing I would add to that is cabbage, which I believe you can grow together with the potatoes. Entire countries survived WW2 on cabbage and potat

Most important thing I would add to that is cabbage, which I believe you can grow together with the potatoes. Entire countries survived WW2 on cabbage and potato soup, it's very nutritious. If you're after some flavour, I'd also add onions and celery, which I guess go in normal soil with the cabbage and potatoes, and also carrots, which will want sandy soil. There's a good reason these three veggies together form the basis of lots of French and Italian cooking.