Preheat the oven to 180 degrees C. Grease a 20 x 30cm baking tray or a dish of similar size.
In a large bowl mix together the mince, lemon juice, water, egg, bread, onion and seasoning salt until well combined. Shape into 6 individual loaves - I like to make large balls. Place them in the prepared baking tray.
Bake for 15 minutes in the preheated oven while you prepare the topping. In a small bowl stir together the tomato sauce, brown sugar, mustard powder, allspice and cloves. Spoon the sauce over the loaves then top each one with a slice of lemon. Return to the oven and bake for an additional 30 minutes or until cooked through.