Iceberg lettuce is a variety of crisphead lettuce celebrated for its remarkably crunchy texture, mild, watery flavor, and pale green, tightly packed leaves. While sometimes overlooked in favor of darker greens, its unique characteristics make it a versatile and refreshing staple in kitchens worldwide. Iceberg lettuce is a source of vitamin K, folate, and fiber, but it has a low nutrient density compared with other lettuces. Learn how to incorporate it into your diet, how it compares with other lettuces, and how to wash it safely. Find out what nutrients are in iceberg lettuce and learn how it can help everything from blood clotting to eye health. Iceberg lettuce is the crunchy, pale vegetable you'll often find added to your fast-food burger or salad when you eat out.