Preheat your oven to 150C/ 300F (fan off), 130C / 265F (fan on). I like baking with my fan off because the tops of the cupcakes bake flatter with no cracks. Position the rack in the middle of the oven. Line a cupcake tray with white cupcake liners.
Combine dry ingredients - To a medium sized mixing bowl, add the flour, baking powder and salt. Use a hand whisk to combine. Set aside.
Beat the eggs - In a large mixing bowl, use an electric mixer on medium-high speed to beat the eggs for 1 minute until frothy. Slowly add the sugar while mixing, taking about 1 minute. Keep beating for another 6 minutes until the mixture is pale, thick, and tripled in size. A stand mixer with a whisk or paddle attachment also works.
Add dry ingredients and strawberry puree to egg mixture - Add half the dry ingredients and the strawberry puree to the eggs. Mix on low until just combined. Add the rest of the dry ingredients and mix again. The batter will be thick. Don’t overmix, small lumps are fine.
Heat milk and butter - Add the milk and butter to a saucepan over medium heat, stirring constantly. Heat until it reaches 60C / 140F or you see small bubbles on the edges. Don’t let it boil.
Add hot milk - Add half of the hot milk, along with the oil, vanilla, and red food gel (if using). Mix on low speed until combined. Add the rest of the milk and mix again until smooth. The batter will be thin and flow in a thin ribbon when poured into the cake tins.
To bake - Add the batter into the cupcake liners, filling them up just above 3/4 of the way. I use an ice cream scoop to do this but two spoons will work. Bake for 25 - 27 minutes or until the tops bounce back when pressed lightly. Once baked, take out of the oven and transfer to a cooling rack to cool completely.
Frosting - While your cupcakes are cooling make your strawberry frosting. I have a really flavorful strawberry buttercream recipe on the blog you can use, otherwise my Ermine Frosting pairs really well with these cupcakes if you want a strawberries and cream experience.
To Decorate - Fit the end of a piping bag with an open star tip. Frost a swirl of frosting on each cupcake and finish with half a strawberry.