Chicken Livers And Mushrooms

• 400 gr chicken livers
• 350 gr chicken giblet gravy (canned)
• 40 gr mushrooms (sliced)
• 30 gr onion (finely chopped)
• 20 gr flour
• 3 gr salt
• 1 gr pepper
• 5 slices bacon (sliced raw)
• 5 slices bacon in