In crochet, an increase is a way to add a stitch to your work, making it wider and larger. An increase stitch is shorthand for putting two single crochet stitches in the same hole. There are different ways to increase in crochet, depending on the stitch and the pattern you are working on. Here are some common methods:

• Single Crochet Increase: To increase one stitch in single crochet, simply work two single crochet stitches in one stitch. For example, if you are working in single crochet, and you need to increase one stitch, you would work one single crochet in the next stitch, then you would work another single crochet in the same stitch.

• Invisible Single Crochet Increase: This method is used to avoid gaps between the stitches. To make an invisible increase single crochet, crochet the first stitch of the increase through the front loop, and then crochet the second stitch through both loops.

• Increasing in the Round: Adding and removing stitches alters the shape of a pattern or amigurumi piece. Increasing involves crocheting 2 stitches in the same stitch when working in the round. You will increase in the round the same way you increase in a row.

In summary, an increase in crochet is a way to add stitches to your work, making it wider and larger. There are different methods to increase, depending on the stitch and the pattern you are working on.