Probably pioneers didn't make soy yogurt but I feel like I'm in Little House on the Prairie when I make my own yogurt. This yogurt is thanks to Bryanna's amazing recipe and is creamily perfect. It's only me that eats it in my house so I make one mason jar at a time and it'll last me about a week. You can adjust the amount of agar depending on whether you want the yogurt to be more creamy and soft or firmer and custardier.
1 mason jar of unsweetened soy milk (this is roughly 3 cups for me)
1/2 t sugar
1/2 t agar
2 1/2 T tapioca starch
1/3 c soy yogurt with active culture (I used Wildwood for the first batch)
1. Put 1/3 c soy yogurt out to bring to room temperature. Put a large kettle of water on to boil.
2. Take clean mason jars (I only had three), fill with boiling water and cap them. Then put them inside a cooler. Make sure there's space left for one more mason jar. Put another kettle of water on to boil.
3. Gather the following:
- clean mason jar
- big glass bowl
- wire whisk or egg beaters
- measuring cups and spoons
- regular old spoon
- large dinner plate
Put plate and bowl in clean sink. Place cups, spoons, spatula, whisk, mason jar and mason jar lid on the dinner plate. Scald everything with the boiling water.
4. Pour 1/2 cup soymilk into the glass bowl. Sprinkle with agar powder and let sit for a few minutes. Whisk in tapioca starch and sugar. Add another cup of soymilk.
5. Heat for 30 seconds in microwave and then stir well. Repeat until the mixture is thick and gooey. Roughly 2 minutes total.
6. Pour in the rest of the soymilk and let temperature cool to 115 F. I test by pouring a drop on my wrist and call it good if it's a couple of notches below ouch and not yet comfortable bath temp. That's probably not so helpful. At this point, whisk in yogurt culture until it's well incorporated.
7. Pour the mixture into the mason jar, cap and place in the warmed cooler. Wrap the cooler in a blanket and let it incubate for 6-10 hours. The first time I incubated for 12 and it was waaaay too long. The second time, 8 hours was perfect. The third time, 8 hours made very tangy yogurt so be adaptable.
8. After the yogurt is incubated, let it sit in the fridge for 12 hours or so before eating.