Cook and cool 25g brown rice (microwave rice is fine). Whisk together 15g peanut butter with a small clove of crushed garlic (optional), a tiny piece of crushed, fresh ginger; half a teaspoon soya sauce, a quarter of a teaspoon of brown sugar and a teaspoon of lemon or lime-juice. Put to one side. Shred a total of 100g of raw cabbage (red and or green), iceberg lettuce and beansprouts and mix with a grated carrot and also put to one side. Cut half an avocado (100g) removed from its shell, into quarters, dice, squeeze over some lemon juice, cover and along with four cooked prawns (fresh or frozen and defrosted) again put to one side. Take four rice paper wrappers or four large butterhead lettuce leaves and lay them out on a chopping board. Divide the rice into four and lay each serving on to a wrapper or lettuce leaf. Follow with a quarter each of the cabbage and carrot mix / avocado and prawns, wrap up and serve with the satay sauce.