Preheat oven to 350oF (180oC). Line a standard 12 cups cupcake pan with paper liners. Set aside. To a small bowl, add mint leaves. Then add hot water to mint leaves and let it steep for 10 minutes.The, strain and let mint water cool down. To a bowl, add sugar, water and oil. Whisk until sugar is completely dissolved.
Sift in flour, cocoa powder, baking powder and salt.
Mix until dry flour is no longer visible. DO NOT OVER MIX (mix until dry and wet ingredients are just combined).
Then, add chocolate chips and mix.
Spoon batter into cupcake liner until 2/3 full.
Bake in preheated oven to 350oF (180oC), rack middle position, 18-20 minutes, or until toothpick inserted in the middle of cake comes out clean.
Let cupcakes cool down in pan for 10 minutes. Then transfer cupcakes to wire rack to cool down completely.
To make the icing, add icing/powdered sugar and water to a bowl and mix well.
Add icing on top of cupcake and decorate with fresh mint leaves,