Shad Roe with Nettle Puree and Bacon

Fine-dice enough thick-cut bacon to make ¼ cup (about 1½ ounces). In saucepan to which you’ll add nettles, cook, covered, to render fat. Transfer bacon to paper towel. Pour fat into a dish and reserve. Continue as above, using 1 tablespoon bacon fat and 1 tablespoon butter to br