Some types of beans, nuts and legumes are particularly high in copper, making them a good source of that mineral for vegetarians. Eaten in 1-ounce servings, cashews provide 629 micrograms, sunflower seeds have 519, hazelnuts give you 496, almonds contain 332 and cooked lentils provide 497.any zinc supplements contain copper to help maintain a balance of these nutrients. To do so with food, add high-zinc foods to your diet, including oysters, beef shank, crab meat, beef shoulder, fortified cereals, chicken legs or lobster.