Clusters, like puff stitches and popcorns, are a variation several stitches worked together. Whereas popcorns are several complete double crochet stitches joined at the top and puff stitches are several half-double crochet stitches worked together, clusters are several double crochet stitches worked together. A cluster is usually a group of three double crochet (often abbreviated dc3tog), but it can also be a group of two (dc2tog) or many more (dc4tog, etc), depending on its purpose in the pattern.
For the purposes of this tutorial, we are going to work a cluster of three.
2. Working in the same stitch as Step 1, begin another double crochet, this time stopping when you have 3 loops left on the hook.
3. Repeat Step 2 again, this time stopping with 4 loops left on the hook. You now have 3 incomplete double crochets.
4. Yarn over and pull through all 4 loops on the hook to finish the 3 double crochets together.
5. If you are going to be working a row of clusters, you'll want to finish the cluster with a chain stitch to keep the fabric from bunching.
That's it! We hope you enjoyed this series.