The custard flavors at the Shake Shack this month are particularly intriguing, Coffee & Donuts or Raspberry Jalapeno, anyone? The popular Salted Caramel is back on the custard calendar [PDF], along with a refreshing Yogurt and Strawberry Swirl on weekends. The B line wait on Wednesday afternoon for the "coffee and donuts" custard was short; two minutes and $2.75 later for a single dip, I was happy as a plum. Dark and speckled with coffee grounds, it was more a coffee custard with few doughnut chunks folded in, than a half coffee/half doughnut creation. Nonetheless, it's tough to complain while luxuriously creamy custard is slipping down your throat on a warm afternoon.