Add the kidney beans, black beans, sweetcorn, potatoes, Rotel tomatoes, crushed tomatoes, and beef stock. Stir everything together.
1 can (14 oz / 400g) red kidney beans
1 can (14 oz / 400g) black beans
1 can (7 oz / 200g) sweetcorn
1 pound Yukon Gold potatoes
1 can (10 oz / 300g) Rotel tomatoes
1 can (14 oz / 400g) crushed tomatoes
4 cups beef stock