Working Tunisian crochet in the round requires two strands of yarn. But what if you only want to use one skein of yarn? Sometimes folks will create two balls but I prefer to use a single center pull cake.

To keep the ends from twisting together, you just have to swap which side is up when pulling. The center pull side needs to be facing down with pulling from the outside and the center pull side needs to be facing up when pulling from the center. Just swap which side is up when you swap between the forward and return passes!