can yogurt sit out for a couple of hours
Once the yogurt thickens and you think it may be ready, taste it before you stick it into the refrigerator. If it seems too mild, let it sit out for another couple of hours to increase the tanginess. You can leave it for up to 24 hours at room temperature if need be without worrying about spoiling. You can use your homemade yogurt as the starter for the next few batches, but it can weaken over time and lose its thickening power. As a precaution, Iâve been buying new yogurt for every five batches.