Beans with beef in tomato sauce (fasouliah)

Name: Beans with beef in tomato sauce (fasouliah)
Prep time: 5 min
Cook time: 13 h 30 min
Total time: 13 h 30 min
Yield: 6 portions
Ingredients: 250 g dried butter beans; 1 tsp baking soda; 1300 g water; 200 g onions; 45 g olive oil; 300 g beef shoulder meat; 1 tsp salt; 1 tsp pepper; 70 g tomato purée (concentrated)