Cutting lettuce with a metal knife isn’t recommended because it can cause browning of the lettuce leaves. Using your hands or a plastic chopper causes tearing that allows leaves to break along their natural fault lines, rupturing fewer cells and reducing premature browning.
That and you don’t want your 8-year old waving a sharp knife around in the kitchen. So do you want good looking lettuce, to keep your extra fingers, get some help in the kitchen and make sure everyone has fun? If so, look no further than the Karate Lettuce Chopper by Gamma-Go.
This serrated plastic piece of fun filled kitchen cutlery is child and dishwasher safe. Also handy (pun!) for zombie attacks (pretend ones).