Perfect vanilla cupcakes! UK

I have baked ALOT of cupcakes.. and I'm not talking crazy flavours, just simple vanilla cupcakes. I have also tried a lot of commercially produced cupcakes and I am ALWAYS disappointed. Too dry, no vanilla taste, that fatty feeling in the icing, and worst of all... that eggy smell!!
But, eggy taste NO MORE!! Perfect cupcakes have arrived. After much testing and trying and arranging other recipes we have the perfect recipe that gets you perfect vanilla cupcakes EVERY TIME!!

You need:
110 grams of good quality butter at room temp (Lurpak is good, lovely taste)
110 grams of castor sugar (white sugar is fine if you don't have castor)
2 eggs
1 teaspoon of premium quality vanilla essence or paste
120 grams McDougalls premium sponge self-raising flour
1 tsp salt
1 tsp of baking powder
1 table spoon of corn flour

Directions: there are some old-fashioned tricks
1. Beat the butter and sugar until light and fluffy, then add the eggs, vanilla and salt.
2. measure the flours and baking powder in another bowl
3. SIFT it into the butter/sugar mix and beat in for a couple of seconds until combined.
4. Divide evenly between 12 cupcake cases to get the cupcakes that rise to just under the side of the case, or divide between 10 if you want the cupcake to really pop up over top of case
5. Bake in the oven at 170 degrees Celsius for 12 mins exactly and NO MORE. They will go dry.
6. A tip for people in Australia dealing with humidity: Leave them to cool for exactly 5 mins in the tins and the papers won't peel off. Ice them when cool with a think layer of icing that closes the cake and keeps them from drying out over night.

Easy... so easy.. perfect light and fluffy vanilla cupcakes every time.

Buttercream
Beat 250gms good tasting butter with 500grams of pure icing sugar (not the icing mix)  and 1-2 teaspoons of good tasting vanilla essence or paste until light and fluffy. Make sure butter is at room temp!