Overlay Mosaic Crochet is 1 of 3 mosaic crochet methods that are color work methods that create stunning geometric designs.
To begin with it uses simple stitches, the entire base of the fabric is created with single crochet worked into the back loop. It creates bands of colors. Working double crochet loops 2 rows below in the unused front loop of the fabric. As a result this causes the color of the double crochet stitch to cover the color the row below. This ensures that the color work looks more difficult to work than it actually is.
However, this fabric is only worked on the right side, so you never turn. In addition, it is worked with only 1 row of color at a time. The result is a fabric that needs to be joined and fastened off for every row.
The easiest way to deal with the loose ends is to have fringe. Leaving the tails long of both the joining and fastening off. More modern methods have utilized this method in the round, so that the right side is always facing, and the color is carried at the join.
I have stumbled across a Continuous Overlay Mosaic Crochet Method, put together by Susan Lowman. It is brilliant for creating this fabric in a flat method with far fewer ends to weave in. Make sure sand check out her video here. I like to use Overlay Mosaic for hats and fingerless gloves. I find this approach to be very straight forward and easy to follow. Creating some fun highlights for colors.