Lasagna without stuffing corn

2 tablespoons butter 6 slices bacon , diced 1/4 lb ham , diced 1/2 lb ground veal or 1/2 lb ground pork (or 1/4 pound of each) 1 lb ground beef 1 1/2 cups[...]

2 slices bacon , chopped 1 onion , finely chopped 1 carrot , finely chopped 1 stalk celery , finely chopped 1 garlic clove , crushed 12 ounces lean ground[...]

650 g beef , minced 1 tablespoon oil 1 large onion , small dice 125 g button mushrooms 125 g smoked bacon , diced 1 garlic clove , crushed 1 teaspoon dried[...]