In my latest pattern, I use a less common form of a double decrease, found more commonly in older stitch dictionaries and patterns. It looks good from both sides in ribbing and is a better match for sl knitwise, k2tog, psso. It is written as ssk, put st back on LN, pass next
st over, sl to RN. This is what it looks like:
1. SSK- I do a version called SSK improved, where you slip as in knit, slip as in purl, k2tog through the back loop.
2. put the stitch back onto the left needle
3. slip the second stitch on the left needle over the ssk
4. slip the stitch to the right needle.