Light and fluffy cupcakes with dairy-free chocolate buttercream.
Preheat oven to 180°C/350°F (or 160°C/325°F if you're using a fan or convection oven). Line a cupcake tray with 12 cases.
Mix the soy milk and apple cider vinegar together and set aside. This will act as your buttermilk.
In a large bowl, mix together the flour, baking soda, cocoa powder and sugar.
Now add in your buttermilk along with the oil and cold coffee. Mix well to make a smooth cake batter.
Divide the batter between your 12 cases and bake for 18-20 minutes. You'll know they're ready when a toothpick comes out clean. Transfer to a wire rack to cool.
Gently mix the margarine until it’s slightly soft. Add in the icing sugar and cocoa powder, a little at a time, mixing as you go.
Use as much soy milk as you need to help loosen it to your desired consistency. Add it in slowly as you might not need it all.
Stir in the cold coffee.
Pipe the buttercream onto your cooled cupcakes and enjoy!