Spring Cabbage Soup

• 55 g butter
• 140 g chopped potatoes
• 110 g

Melt the butter in a heavy saucepan. When it foams, add the potatoes and onions and turn them in the butter until well coated. Sprinkle with salt and freshly ground pepper. Cover and sweat on a gentle heat for 10 minutes. Add the stock and boil until the potatoes are soft, then add the cabbage and cook with the lid off until the cabbage is cooked. Keep the lid off to retain the green col