This is a little trick I learned from my mom. You will need one head of lettuce and a salad spinner. (The spinners come in 2 sizes, large and small. I own the small one and love it because it is easier to store) Wash and cut up your lettuce, place it in your spinner and spin. Remove inner bowl of lettuce, pour out the water and return bowl and salad to spinner. Place the lid on top of the bowl and set in your refrigerator. Your lettuce will be washed, cut and ready for you to use. By placing it in the spinner (with water removed) your greens will stay fresh for about a week! Viola: fresh, washed lettuce. Enjoy!