3. Place the cooked liver and the cooked onions in a blender or food processor. Grind coarsely. In a medium bowl, combine the liver/onion mixture with mashed hard-boiled egg, salt, and pepper. 4. Refrigerate overnight then serve with sliced tomato, sliced cucumber, and rye bread. Makes 4 servings. Source(s): http://www.cooksrecipes.com/beef/chopped...