I am usually very, shall we say, inflexible about my weekly menus. The Southern husband and I decide on our suppers for the week on Saturdays, and on Sundays we hit the farmer's market with our list in hand. If someone suggests a change in menu after I finish writing out my list, they are usually out of luck. I'm just ornery that way. But a little while ago I arrived at the farmer's market one Sunday to find heaps of these teeny tiny baby new potatoes - red ones, yellow ones, and (I am not kidding) purple ones. And so I broke one of my own cardinal rules and decided right there in the middle of the store to chuck the dinner plan for one of those nights and make shrimp salad with new potatoes.