How to make it
Combine ketchup and Sprite in a tall pot and warm over medium heat.
Add salt, onion and garlic powders, and black pepper, stirring to dissolve, then add Worcestershire, mustard, vinegar, lemon juice, and brown sugar.
Continue to stir as sauce begins to bubble. Remove from heat when it hits a high simmer. Cool to room temperature, transfer to a glass jar or plastic container, and store in fridge. It’ll keep for about three weeks.