1. Chain 5 stitches and slip stitch first chain to last chain to form a circle. Then crochet 20 DC (double crochet) stitches in the center of the circle. Once you reach the end, slip stitch the last stitch to the first stitch to close off the row.
2. Chain 3 (counts as first DC).
3. DC in same stitch again.
4. Then crochet 2 DC in every stitch around the circle. This will double your amount of stitches to 40. Slip stitch the last DC to the top of the first stitch created by the chain 3 at the beginning of this row. Already at this point this row has turned up to create a side wall for the basket.
You can stop at this point if you like if you want your basket to have a low side wall. Because we did not have a large amount of line left, we did a row of slip stitches around the basket to add a little more height. If you have more line, you can add a row of SC or DC. In this particular row, only crochet 1 stitch into each stitch. This will keep the stitch amount at 40 and simply add a straight vertical row onto the basket.
When finished, weave the loose ends towards the bottom and underneath the basket to keep them out of sight.