Trim spare ribs by removing all silver skin. Cut off rib tips. Cut slab into individual ribs.
Soak ribs in vinegar in a bowl, covered and refrigerated, turning ribs once, for 15 minutes. Pour off vinegar and add lemon juice. Soak 30 minutes, covered and refrigerated. Rinse ribs with cold water and pat off excess water. Ribs should still be moist. Sprinkle ribs with salt and pepper, then cover in Florence’s Fried Chicken Seasoning.
Heat shortening in a skillet over medium-high heat until melted.
Place ribs in skillet fleshy-side down. Cook until crispy, approximately 10 minutes. Turn and cook an additional 5 minutes.
Florence’s Fried Chicken Seasoning:
Stir together the flour, salt, pepper, baking powder and cornstarch in a medium bowl.