This potato salad, made with snap peas and potatoes from my magical neighbors, and fresh herbs from my own puny attempts at gardening (why try, when you have gardening elves?), is the kind of potato salad that you can fool people into thinking is healthy. Very green, full of herbs and peas, it’s almost as if it doesn’t contain a healthy dollop of olive oil and a couple pats of butter. (Unless you are set on making a healthy potato salad, don’t leave out the butter; it melds all the flavors together and keeps it from becoming one of those ultra-vinegary potato salads—the type that make you long for some good mayonnaise.)