I stopped in at Strangeways Brewing in Richmond, Virginia and sampled two of their sour beers (which they are widely known for).  Their Uberlin Berliner Weisse Sour was delightfully crisp and tart with hints of fruity flavors.  The Bartlett and Bosc Pear O.T.I.S. was deliciously pear-flavored, tangy and refreshing.  On a warm summer day these sours will be perfectly refreshing.