Kebabs with Lambs’ Kidneys

• 4 lambs’ kidneys
• 4 rashers bacon, rinds removed
• 1 large onion

Skin, core and slice each kidney into four. Cut the bacon into one-inch squares. Quarter the onions and part the pieces, halve the tomatoes, cut the pimento into one-inch squares, remove the mushroom stalks. Put the meat and vegetables, including the basil leaves, in a bowl, and sprinkle with lemon juice, plenty of olive oil, salt, pepper and thyme.

Add the bayleaves and marinate for ab