If we have a little tired looking lettuce of any kind, I like to add it right at the end to fried rice. Yesterday, we had some leftover "spring mix" that was looking past it for salad - and there wasn't enough anyway for two of us - so I stirred it into a can of pinto beans after I'd simmered them with some onion. I cooked the beans a few minutes longer after adding the greens until they were completely wilted and the sturdier pieces were tender. I topped the beans with a drizzle of olive oil, a sprinkle of salt, and some fried fresh sage leaves. Mmmm... -- it didn't taste like peasant food, but it was a cheap supper!