Probably because I never heard of one. Duh. The Rich Life on a Budget had a great post on keeping fresh veggies and such cut up and ready to go in the fridge so we wouldn't be so tempted to grab the chip bag when we were hungry.
Frequent commenter, LRS2Amanda, gave a hearty thumbs-up to the Oxo salad spinner and then said, "I also bought this serrated plastic knife that cuts the lettuce without turning it brown if prepping ahead."
Whaaaaaaat? A special knife for lettuce? I must look into this. I headed to Amazon, and there it was. Cool. I need one of those. Last time I bought three heads of Romaine at Costco, I got the bright idea to cut it all up and put it in individual two serving plastic bags. Honestly - I KNEW BETTER. Within a very short time all the lettuce was brown and yucky. What was I thinking????? Generally I tear my lettuce but with Romaine, the lettuce gods demand it be chopped up with a knife - or something.
And look - it's lime green. How cool is that?