Living in New York City as I did in my 20s and 30s, I never understood the attraction of a sidewalk café. Even sitting at the most expensive, gorgeous outdoor dining table, I was still stuck in the middle of a concrete slab with the sun beating down on me, trying to prevent the wind from carrying off my napkin. I felt irritable instead of continental. Is there anything less comfortable than metal chairs? I don’t think so. With a little imagination, you can turn your yard in