Pattern worked in ROUNDS, do not turn.
Round One: Ch 3, 11 dc in 1st ch. SS to join. Pull yarn to tighten center.
Round Two: Ch 3, 2dc in each st around. SS to join with starting ch.
Round Three: Repeat Round Two.
(If you want a bigger coaster, repeat round two again)
Round Four: Ch 1. 1 SC in each st around. SS to join with Chain.
Let me know if you have any questions, comments, or corrections!!