Its fairly easy to do without a thermometer when making yogurt - for the initial heating, heat just until little bubbles form around the side of the pan (this is "scalding", and used to be called for in old bread recipes back when I was just starting with making breads). Cool it down before putting in the starter culture - use the *baby bottle* test, put a couple of drops of the milk on the inside of your wrist; if it feels neither warm nor cold (or, just slightly warm) then it is at an OK temperature, and won't kill the starter.savingdogs said:It wasn't past the "sell by" date, but I had it over a week and a half. It was rather watery. Could the milk have been too hot, would that kill off the yogurt? My thermometer isn't real easy to read, it could have been a little hot? Do you think I "killed" the starter?
Is there anything that can be done with this watery yogurt?
For a starter I buy a new quart of a good yogurt (i.e. one I like the taste of), and freeze dollops of it in ice cube trays, using one or two dollops for each batch of homemade (they come to room temp while the hot milk is cooling). This way I know the culture is fresh, whereas sometimes I only need to make yogurt every 10 days or so, and that is often too long to use the last batch as a starter.