Download ImageChocolate Cupcakes Sponge (@Cupcakejemma ) Ingredients140 gr plain flour185 gr granulated sugar30 gr cocoa powder1/2 tbsp bicarbonate soda125 ml cold coffee or water125 ml buttermilk105 ml vegetable oil2 large eggsInstructions1. Mix all the wet ingredients followed by dry ingredients (shifted).2. Place the cupcake paper on tin.3. Pour the batter 2/3 of the cupcake hole.4. Bake in preheated oven at temperature 160 degree celcius for 20 minutes. Chill.Russian Buttercream (@Chelsweets)250 gr unsalted butter, room temperature1 tsp vanilla extract1 tin (397 gr) sweetened condensed milkFood coloring (optional)Intructions1. Whisk the butter for 7 minutes in high speed until fluffy and pale in color.2. Add the vanilla extract.3. Add 1 tin condensed milk 3 or 4 installment. Scrape down and side the bowl throughout the process.5. Mix all until incorporated.6. Put it inside the piping bag. Ready to use. Source : www.instagram.com