Preheat the oven to 200 degrees. Line a cupcake pan with paper liners. In a medium bowl, sieve together flour & baking powder. In a large bowl, cream together butter and sugar with a wirewhisk until combined. blend in the eggs & beat well . add lime juice, lime zest, buttermilk, mint essence & green color. add the flour mixture. Continue beating the mixture for another few minutes to ensure that the batter is thoroughly mixed and well aerated.
pour spoonful of batter in each of the greased cupcake pan & bake for 15-20 minutes or until toothpick inserted in the center comes out clean. Let cool in the pan 5-10 minutes, then transfer to a wire rack to cool completely.
for whipped cream frosting : Using a standing mixer fitted with the balloon whisk attachment, whip the chilled heavy cream on high until it just holds stiff peaks. Slowly sprinkle in the sugar until you reach a thick consistency. Add in the lime juice and whip until combined. chill for few hrs & transfer in a piping bag with a desired nozzle.
frost the cupcakes with the prepared lime whipped cream . garnish with chopped strawberries , mint leaves & serve chilled