Blonde de Lyon

http://www.thegrowers-exchange.com/Sorrel_Blonde_de_Lyon_p/her-sor01.htm

We grow Ruby Sorrel (AKA Bloody Sorrel, Bloody Dock) as an ornamental.

Blonde de Lyon is the gourmet culinary version of Ruby Sorrel.  We probably should try growing some, since Ruby Sorrel does so well in the garden.