Purslane is one of those edible weeds that inevitably disappoints. There’s a reason that Euell Gibbons, who knew his way around edible weeds, suggested sauteeing it with bacon. By itself, it tastes like grass clippings.
I felt duty-bound to eat some since it grows, unbidden, in my garden, threatening to crowd out the fennel and beets that, despite my bidding, are not doing nearly as well as the purslane.
I put it in a salad. It tasted like grass clippings.