In a clean 4 cup glass bowl, whisk in 1 Quart of soy milk with yogurt starter (see below for specific notes on starters)
Place bowl inside Instant Pot, make sure valve is set at "Venting" and place on yogurt mode for 15 hours
After 15 hours, fold 3 paper towels and place on top of yogurt, cover with airtight lid, and place in refrigerator.
Keep in refrigerator for at least 2 days. Every 24 hours or so, strain out paper towels and place back on top of yogurt (this helps create a thick and creamy yogurt).
Be sure to keep about 1/3 Cup of yogurt from this batch to use as a starter for your next batch.