It annoyed me so much to go to stores to get self raising flour for recipes and have to pay more than regular flour for these little bags. After paying more for the umpteenth time, I knew there had to be a more cost effective way. Off to the internet I went. I felt so silly after reading how easy it is to make self raising flour at home.
All you need is to add 2 teaspoons of baking powder to every cup of flour. That's it.
To make life easier for me, I make huge batches of this each time. I would rather measure out flour and baking powder than waste money.