I used merrill's recipe for homemade yogurt and it didn't come out right. I made it twice: half the mixture in a yogurt maker and the other half in a warm oven for the suggested amount of time, and the second try was for a longer period time, thinking I had not waited long enough. I followed the directions explicitly (sp) and neither attempt was succesfull. I was thinking maybe it's because of the weather: I live in NY but it was last week when it was 50-60 degrees (although the heat was on in the house). Could that have contributed to my failures (boo-hoo!)?