I use the crinkle cutter if I'm using the lettuce right away but if it will be used later I cut it with the nylon slice and serve to prevent browning.plichte said:Maybe you all can help me with this. I have always been told that when working with lettuce you should never cut it with metal because it makes the lettuce brown and wilt. I have found this to be true personally-could just be coincidence. I do have a plastic lettuce knife at home that I use for lettue (it's not pampered chef of course) since they don't offer that---but has anyone else ever heard of this? Not using metal on lettuce?