I am not crazy about vegetables. I try to have a side salad with my lunches - usually mostly iceberg or romaine with dressing, maybe a little onion or tomato and cheese on top. I can't really manage a salad as my entire lunch so I don't eat a whole bowl of it, just a small handful of lettuce.

The problem is, lettuce goes red/brown very quickly. I have been buying the bags of pre-cut lettuce, but they only last a couple of days. Heads of lettuce aren't much better.

Anyone have any tricks for keeping lettuce longer?