The signature flavors from the dessert of the same name inspired this sweet-and-salty milkshake.
Dip rim of a tall glass in caramel. Place glass in freezer while preparing milkshake.
Blend vanilla ice cream and milk until thick but pourable. Add 1/2 of the banana and pulse to combine.
Sprinkle remaining banana slices with sugar; using a hand-held kitchen torch, caramelize the bananas.
Spread some caramel sauce on the inside of the prepared glass. Add coffee ice cream. Drizzle with more caramel sauce and break 2 pretzels into glass. Top with milkshake; do not fill to the top of the glass or it will overflow when toppings are added. Pipe on whipped cream, as desired. Top with bruleed banana, more caramel sauce, and pretzels also dipped in caramel. Serve with a straw, a bowl and a spoon.