The volume of 100 grams of lettuce can vary depending on the type of lettuce and how finely it’s chopped or shredded. However, as a general guideline:

• 100 grams of lettuce is approximately 3 to 4 cups of loosely packed, shredded lettuce.

If the lettuce is packed tightly, it might be closer to 2 to 3 cups. Keep in mind that different lettuce varieties (like iceberg, romaine, or leaf lettuce) can have slightly different densities.

Here’s a bit more detail on how the weight-to-volume conversion works for lettuce:

• Iceberg Lettuce: Because of its high water content and firm structure, 100 grams of iceberg lettuce will generally be around 3 cups when shredded or chopped loosely.
• Romaine Lettuce: Romaine tends to be more compact and dense, so 100 grams of romaine lettuce will likely be about 2.5 to 3 cups of shredded or chopped leaves.
• Leaf Lettuce (like Red or Green Leaf): Leaf lettuce has a more delicate structure, so it’s lighter and more voluminous. 100 grams of leaf lettuce could be closer to 3.5 to 4 cups when shredded or loosely packed.

Important Notes:

• The weight can also depend on how you chop the lettuce: finely chopped lettuce will take up less volume compared to loosely shredded lettuce.
• For more accurate conversions, it’s always a good idea to use a kitchen scale to measure the lettuce if you’re aiming for precision in a recipe.