Maryam Suleiman: Self raising flour already has baking powder so you don't need to add. My guess is the flour has probably stayed too long and has the active ingredients have become weak therefore making your cakes have a low rise. Try adding 1 and a half tsp to every cup of flour instead of self raising flour in your recipe.
Sade Oguntolu: Is it one and half teaspoon or 1 teaspoon? I use 1 teaspoon to every cup of flour and sift thrice and it works perfectly for me.
Maryam Suleiman: For self raising, its one and a half teaspoon baking powder with a quarter tsp of salt
Ademuyiwa Olonade: What's the difference between self raising and all purpose flour....pLSSSSSS
Maryam Suleiman: Self raising flour has baking powder and salt added while all purpose flour doesn't