We've just eaten our entire season's crop of lettuce in two very small side salads. I think that we need to rethink our horticultural practices. Lots of stones and soil that looks like dust does not make for happy, abundant lettuces.
Furthermore, we're suffering from lettuce-envy, because friends of ours produced a bed full of hedge-sized lettuces in a couple of weeks. Our scrawny little saplings have struggled for months to reach a size that makes it worthwhile washing them and putting them on a plate.