    By red licorice, I believe you are referr â¦ ing to the candy. Raw licorice can have a dark reddish hue, however. Red licorice, at least in the states, is flavored candy that does not contain true licorice.
Other foods high in potassium that vegetarians may use are soybeans, textured vegetable protein (TVP), soy nuts, soy flour, natto (soybean paste) and wasabi. Potassium amounts will need to be modified and levels monitored carefully by your renal dietitian.
High Copper Foods: Once copper levels have stabilized to normal, these foods are allowed occasionally. If you are a vegetarian, please consult with our dietitian as many of the foods used for protein in a vegetarian diet are high in copper.1  Lamb. 2  Pork. 3  Pheasant. 4  Quail. 5  Duck. 6  Goose. 7  Squid. 8  Salmon. 9  Organ meats including liver, heart, kidney, and brain. 10  Shellfish including oysters, scallops, shrimp, lobster, clams, and crab. 11  Soy protein meat 12  .... Tofu.f you are a vegetarian, please consult with our dietitian as many of the foods used for protein in a vegetarian diet are high in copper. 1  Lamb. 2  Pork. 3  Pheasant. 4  Quail. 5  Duck. 6  Goose. 7  Squid. 8  Salmon. 9  Organ meats including liver, heart, kidney, and brain. 10  Shellfish including oysters, scallops, shrimp, lobster, clams, and crab. 11  Soy protein meat 12  .... Tofu.