You can leave it longer if you want)
Once the mixture has risen and doubled in size, you then move on to frying.
How to fry puff puff
on medium-high heat, add enough oil to a frying pan and heat till hot (about 4 inches high). Drop a tiny bit of batter in hot oil to test and if the batter floats to the top of the heat then it is ready to use.

Method on how to scoop batter to oil with your palm: People always find scooping batter in oil very tricky but I tell you it is very easy.
Get clean water in a bowl
Dip your hand in the water to wet it a bit, shake off excess
Dip your hand in batter, draw the batter towards the bowl and yourself
Keep the batter in between your fingers and palm
Squeeze batter in-between your palm and allow it to drop freely into the oil

Don’t overcrowd the oil (Please refer to images in post for reference)
The batter should float to the top of the oil, this is where the magic start, I just love the bits when the puff puff starts turning in the hot oil (reduce the heat a bit at this point so that puff puff can fry through and be well done)
Fry puff puff on both sides till golden brown
Repeat the process till you have exhausted the batter