I decided to make some sun tea at home today. I remembered my old reflector I made several years ago from the shiny side of insulating foam used in the campers. I call this my sun tea accellerator. I'm making 3 quarts of tea in my gallon sun tea jug. It's been sitting in the reflector for about an hour, part of the time in cloudy conditions. If the sun stays out, I should be brewed enough in another hour.