Place a coffee filter (or a cheesecloth or paper towels) over a fine sieve, place the sieve into a bowl. Take plain yogurt out of the container and place it in the coffee filter, so that it starts to drain. Place in the fridge for at least 1 hour or overnight. Discard the accumulated liquid on the bottom of the bowl, use the thick, creamy yogurt in the recipe as needed.
Yogurt contains a lot of water. Let’s calculate to see just how much. Here is a label for Yogurt, plain, whole milk, 8 grams protein per 8 ounce.
Add total fat 8g, total carbohydrates 11g, and protein 9g. Total is 28g. Subtract 28 from the serving size, which is 245g, this comes out to 217. Now divide 217 into 245 and multiply by 100. The total percentage of water content is 88.5% or 89% when rounded off. So there you go, now you know why so much liquid came out of the yogurt when you set it to drain!