Cooked much like asparagus, purslane stems when cooked a good added to a cold salad.  Try them!

1 bunch purlsane, leaves removed for another purpose and stems washed and chopped
dash of vinegar
pinch of salt

Simmer chopped stems in water with vinegar and salt until tender.  Drain and chill.  Add to salads or mix with herbs and a dressing to use on their own.