Last week, we discussed "leaf" lettuce, but when it comes to these greens, "leaf" varieties are only the tip of the "iceberg." Today, expect our study to come to a "head" as we talk about my favorite kind to have on hand: butterhead lettuce. From Boston to Bibby, these tender leaves are loose and sweet, making them ideal for salads, sandwiches, and snacking. And while I rarely grow butter lettuce, it's a staple in my fridge, thanks to "living lettuce" packaging options that keep heads fresher longer. But no matter if it's in a clear clamshell or in a bag, be sure to properly wash everything!