Let me tell you from the start, this beer mug cake tastes AMAZING! Once I came up with this recipe people were doubting and wondering, but as soon as they tasted it, the moistness with beer flavor, everyone wanted it. Friends asked me to make it for their birthdays and my brother, who already tasted plenty of my cakes, confirmed it to be the best cake he ever tasted from my creations. Beer flavor in a cake is actually pretty amazing, as it combines the sweetness of the cake with a pleasant hint of bitterness of the beer. Beer also…