Our family eats a lot of salad, even during the winter months when the price of iceberg lettuce is more expensive. After trying many ways to keep it fresh, I have found that if you remove the core, completely wrap the head of lettuce in aluminum foil, and keep in the crisper section of the refrigerator, it will last for weeks.
My mother-in-law gave me this tip and I was amazed to see how well it works. Now if the stores run lettuce on sale, I stock up!
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