Butterhead lettuce has soft wavey leaves with a similar shape to the head of a rose. Its colour can vary from several shades of green to red tipped. It has a subtle sweet flavour. Storage: Butterhead lettuce can be stored in the crisper section of the fridge for up to 4 days. To keep the lettuce fresh for up to 10 days the base root section of the lettuce should be immersed in water and placed in the fridge. Nutrition: Butterhead lettuce is low in fat and a good source of Vitamin A and folic acid - making it great for your eyesight and general cell health. Butterhead lettuce has also been said to have a slight sedative effect on the body, making it great for those with sleeping issues. Ideal Use: Great torn up in salads.