Seeds from this Capparis spinosa or Caperbush. This is the famous bush that gives us capers. The edible part is the buds of the flower before they open. Pickled in a salty brine, they keep a long time refrigerated. I grow this small shrub mainly for the flowers as they blossom most of the summer. This plant does overwinter outside in my zone 8B area but does usually lose all its leaves if we have a killing frost, but comes back to blossom again in the summer. Zones 8-11