The ssp (slip, slip, purl) is a decrease made on the purl side of your knitting, and is a mirror decrease to the p2tog (purl two together). In this clip, it's demonstrated in the English style. The ssp (slip, slip, purl) is a decrease made on the purl side of your knitting, and is a mirror decrease to the p2tog (purl two together). In this clip, it's demonstrated in the continental. style. For more information, including complete, step-by-step instructions, and to get started utilizing this...