Dog days. Hot and sultry weather. Comes from the Roman idea that the Dog Star Sirius was too close to the sun and caused this despicable swelter. No matter. ASPCA will get on my case if I repeat the whole story. After working on the garden, it was time for something refreshing. How about this? Cube up a bunch of watermelon without the seeds, add a teaspoon or a tablespoon of sugar, the juice of a lime or two and whir it in the blender or food processor with a little ice. Lovely, tasty, cool.