If you have plain flour but no self-raising flour, you can make your own by adding 2 teaspoons of baking powder to every 150g plain flour. Sift it through to ensure the baking powder is evenly ...

Place ½ teaspoon of baking soda and ½ teaspoon of baking powder into their labeled cups. Add 2 teaspoons (10 milliliters) of vinegar to each of the two empty cups labeled Vinegar. Using a dropper, add ...

The exact ratios of ingredients may vary depending on the manufacturer, but the typical ratio is about 1 and 1/2 teaspoons of baking powder and 1/4 to 1/2 teaspoon of salt per cup of all-purpose ...