Moist Chocolate Cupcakes with a Velvety Coffee Cream

ntense & Moist Chocolate Cupcakes made with freshly brewed Coffee and baked with blackberries. They are topped with a velvety coffee frosting (a delicate buttercream made with a swiss meringue).
Find detailed instructions in my VIDEO

For 6 Cupcakes:
♥ 90g all-purpose flour
♥ 20g cocoa powder
♥ 1/2 teaspoon baking soda (I also made it with baking powder and it’s OK) ♥ 80g sugar (or 70g + 10g homemade vanilla sugar: https://youtu.be/hpS90B-widQ)
♥ 1/2 teaspoon flaky salt
♥ 45ml (=45g) canola oil
♥ 115ml (=115g) freshly brewed coffee (or hot water)
♥ 1 little egg (or half of a big one)
♥ 12 blackberries (or Raspberries) Coffee Cream
♥ 2 egg whites
♥ 1/3 cup sugar (you can increase to 1/2 if you want it sweater)
♥ 150g butter, at room temperature
♥ 2 teaspoons instant cofee