In a blender
, combine the ice cream
and the bourbon
. Blend on high speed until the desired consistency is reached (the longer you blend, the thicker the milkshake). In a medium glass, drizzle the caramel in a spiral around the inside of the glass. To help distribute the caramel evenly turn the glass as you drizzle
. Pour the milkshake into the glass, and stop when almost full. Top with the dollop
of whipped cream
and a sprinkle of toffee pieces.