Even though August and my own Eat Local Challenge are a bit off, rhubarb is in season now. And if I learned anything from last year, its that I missed my sour - a little lemon, a little lime - it all goes a long way. Rhubarb can sub for lemon in a bunch of ways: in vinaigrettes, in salsa, anything that needs just a little twang. So I'm stocking up now. Looks like I'm not the only one.