1.8kg/4lb potatoes, preferably King Edward or Maris Piper, peeled and left whole
1 large onion, cut into small cubes
170g/6oz butter beans
2 tsp baking powder
280g/10oz barley
sea salt and freshly ground black pepper
280g/10oz flour
2 tbsp goose fat or sunflower oil
2 tbsp sunflower oil
1.5kg/3lb 5oz beef brisket, or braising steak, cut into cubes