Saute the liver in the bacon fat over moderately high heat for 4 minutes,stirring, until cooked through. In a food processor, puree the liver with the onion,celery, W. sauce, lemon juice, eggs and consomme. Stir in the pork, bresd crumbs, salt & pepper. Spoon the mixture into a well buttered loaf pan 9" x 5" x 3". Cut the bacon slices and spread over the top width and bake in a 350F oven for 50 minutes.Let the loaf cool in the pan for 15 minutes and then turn onto a platter. Serve the loaf hot or cold.