1litrehomemade soy milk(watch the video [see notes] or use unsweetened PLAIN soy milk with water and soybeans as the only ingredients like Edensoy [in Canada] or Westsoy [in the US])
Starter - 1st batch only
4probiotic capsuleswith 25 billion CFU each or at least 5 capsules with 2.4 billion CFU each
All subsequent batches
120mlplain yogurt from your last batch as a starter[1/2 cup]
If using the oven for incubation, preheat it at the lowest temperature for 5 - 10 minutes.
Place the milk in a saucepan and bring to a boil.
Turn off and let it cool down to about 42C / 108F.
Open the probiotic capsules and sprinkle the powder onto the milk.
Whisk and stir until all powder is dissolved.
Pour the milk into clean pots and screw the lids on.
Tun off the oven and turn the light on (if it has a light bulb).
Place the yogurt pots in the oven or leave them in a warm (above 30C / 86F) undisturbed place.
Leave to ferment for about 8 hours.
The yogurt will be set by this time.
Transfer to the refrigerator.
Save 1/2 cup [120ml] of yogurt from this batch for the next one as starter, i.e. you don't need the capsules again for the next batch. You can use the yogurt from the last batch for each subsequent batches.
To serve, you may whisk the yogurt a little for a creamier texture and add sugar, maple syrup or other sweeteners of choice. You may add fruits as natural sweeteners.