Add the potatoes, chopped tomatoes, cannellini beans, rice and cabbage to the pot and cover everything with the stock. Give the soup a good stir, bring to a boil, then lower the heat and simmer for 20 minutes until the rice is cooked and the potatoes are fork-tender.
2 medium potatoes
1 can (14 oz / 400 g) chopped tomatoes
1 can (14 oz / 400 g) cannellini beans
3.5 oz Arborio rice
¼ white cabbage
4 cups vegetable stock