So, can you use plain flour instead of self-raising? Yes, 100%. You just need to add 1½ teaspoons of baking powder per cup. Add salt. Sift it. Then bake like a boss.
This is not a hack. It’s a skill. It’s knowing that flour is just flour until you make it something more. It’s you, standing in your kitchen, turning the mundane into the magical.
Go ahead. Grab that plain flour. Add your sparkle. Your cake will rise, your scones will be fluffy, and you’ll feel like a flour-wielding wizard. Enjoy the bubbles.