Created by KittenCal on May 14, 2012
Step 1: Line a medium-large bowl with a piece of cheesecloth or a clean white dish towel. Dump a container of plain (unflavored) yogurt into the center of the cloth. Next bring the four corners of the cloth together and lift the yogurt. Over the bowl or sink, twist the corners to squeeze out the liquid (it will drain through the cloth). Continue squeezing, putting the yogurt under pressure to force the liquid out.
Step 2: When the majority of the surface liquid has been drained, it will start to drip more slowly. Tie off the top of the cloth just above the mass of yogurt with string. Place the cloth containing the yogurt in a strainer or colander, and place the strainer or colander in a bowl where it doesn't touch the bottom (so that the liquid can continue to drain). Place the bowl containing the strainer/colander in the refrigerator and allow to drain for 2-3 hours or overnight in the fridge.
Step 3: After draining take the cloth containing the yogurt and put it in the sink (do not remove the string). Place the palms of your hands on the bag and press down to force out any remaining liquid. Remove the string, open the cloth, and using a spatula transfer the yogurt into a bowl. enjoy -- now you have thick wonderful yogurt!