Method
1. In  a bowl, add the flour, sugar, baking powder, egg, salt, margarine and milk(or water). 
To get a lighter consistency, you can use water. 
Mix thoroughly until the dough is smooth and stretchy.

Now cover and leave to rest for a few minutes.
Tip: If your batter is thicker, you can mold it into balls

3. Heat up the oil until moderately hot (the oil should not be smoking hot or the buns will just cook outside without doing the same inside).

4. Scoop the batter or molded balls and drop into the hot oil.
Fry on medium heat for about 20 minutes, so that the inside of the buns will cook at the same rate as the outside of the buns.
Tip: When you drop the batter, it should sink to the bottom

It should sink to the bottom of the pot or pan. Just wait a few seconds and tilt it a bit with your spatula or spoon.

To fry the next batch, reduce the heat to low. This is because the oil is going to be too hot after the first batch.

5. The buns are ready when they are golden brown