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NAME: Bitter Dock
SPECIES / FAMILY: Rumex Obtusifolius / Polygonaceae (Rumex)
OTHER COMMON NAME(S): Round-leaf dock
CONDITIONS: full sun to partial shade, moist to well-drained soil
COMMENT: When cooked it is delicious. Seeds can be used as a spice. (3) * In this editor's opinion, Patience Dock is the best dock for eating raw, but not-so-much cooked, while Bitter-Round Leaf Dock and Curly Yellow Dock are best eaten cooked, but not-so-much- raw.
To remove this outer shell, toast the seeds to make the shell brittle, then "grind" them between the palms of your hands to shatter the shell off the seeds. Take this shell/seed mixture and go outside during a light wind and pour the mix back and forth between two bowls, allowing the wind to blow away the lighter shell material. This is called winnowing. The seeds can be roasted then eaten as a snack or ground into flour, boiled into porridge, added to bread, etc... Really, their use is limited only by your imagination! They add a nutty, quinoa type flavor to soups and stews. https://www.foragingtexas.com/2008/08/dock.html
CAUTION: Cook with lid off to minimize oxalic acid, as with spinach.
NUTRITION/MEDICINAL: Astringent; Blood purifier; Contraceptive; Salve. (1, 4)
LOOK-A-LIKES: other docks, young corn
OTHER USES: “dark green to brown and dark grey dyes can be obtained from the roots of many species in this genus. They do not need a mordant.” Also used for caterpillar food (1)
SOURCE LINKS (may include nutritional and medicinal info, plus other uses):
http://www.foragingtexas.com/2008/08/dock.html (good photos)