Yesterday, since my goat is drying up, I went over to the dairy and bought a gallon of milk. It is pasteurized and, most unfortunately, homogenized but the cows are not feed antibiotics or growth hormones. I used 1/4 cup of the last of my goat yogurt as the starter and put in 1/4 c. powdered milk mixed with 1/2 c. water just to see what would happen; firm, firm, FIRM. Like after removing a large spoonful, turn the jar upside down and shake and nothing falls out firm. NO whey accumulated either. I did not hold the temp longer, I will do that when I have goat milk again.
Debi, I wonder if the antibiotics that show up in the store bought milk, and they are passed right along into the milk -same as the growth hormones, I wonder if they inhibit the growth of the yogurt bacteria resulting in a weak set?