I baked these cupcakes after buying a rather disappointing margarita cupcake. It was not limey enough and the hint of salt I was hoping for on top turned out to be only sugar. I improvised these ones to have a slightly more intense flavour. The basic cake comes from bonappetit.com, although your favorite vanilla cake recipe with a little lime zest mixed in would be great as well. The icing flavour is up to you; increase the lime juice and tequila for a stronger flavour and a runnier icing, or leave the icing thicker and milder. A drop of green food colouring would look good in the icing, but I left it out because I didn't have any natural food colouring and I try to avoid artificial ingredients. They look great uncoloured too.
