Lettuce soup

• 1 medium-sized onion
• 1 oz (25 g) butter
• 1

Peel and finely chop the onion. Melt the butter in a large saucepan over low heat, add the onion and fry gently for 5 minutes to soften but not brown. Meanwhile, peel and cut the potato in even-sized chunks. Add the stock to the onions; season with salt and pepper and bring to the boil. Add the potato, lower the heat and simmer gently, covered, for 15 minutes until potato is tender.

Coa