This pattern is for a mosaic square that can be used in other types of projects, such as blankets, pillows, trick-or-treat bags, table mats, etc.

Any yarn or hook will work, depending on the desired size of the finished square. I used yarn weight of 4 with a 5.5 hook, which creates a square of 13.5” x 13”.

You will need at least 2 colors of yarn - one for the background and one for the cauldron. (you could use an additional color for the smoke if you want, like the sample image.) You could also use variegated yarn for the background, or use 2-3 colors of yarn to create a striped or gradient background.

Pattern is in US crochet terms.
This is a great way to use up scraps! For projects using 2 colors, (one for the background & one for the featured design), you will need approximately 2 oz of each color for a worsted or aran (wt 4) type of yarn. If you use a different color for the smoke, then 1 oz of each should cover the featured design.