I came across slip, slip purl (SSP) in the crown section of a hat I just finished. The pattern had SSP, then purl 2 together every other stitch. It was only until halfway around the first row, that I realized I don’t really know how to SSP. I was slipping the stitches purlwise, then purling them together. This technique resulted in exactly the same stitch as purl 2 together, or a right leaning decrease. The SSP is meant to create a left leaning decrease to complement the right leaning Purl 2 together. So what was I doing wrong?
The key to SSP is to slip the stitches KNITWISE. Then pass the stitches back to the left handed needle and purl 2 together. Because the stitches are twisted from slipping them knitwise, the decrease will lean in the opposite direction from Purl 2 together. Now I have another simple technique to add to my knitting tool box!