After you've brewed the espresso, sweeten it with the sugar. This step is optional. Remember that the ice cream is sweet, so you could omit the sugar all together. I tend to think it tastes a bit sweeter when the coffee is sweetened.
When ready to serve, add a scoop of ice cream in a small coffee cup and pour over about 1/4 cup of the hot coffee. Top with the espresso beans if using. Repeat with the remaining coffee, ice cream and espresso beans.
Drink right away, but make sure you remember to dip your Hazelnut Twists!
For new flavor combinations, try mixing up the ice creams. Mocha ice cream and dulce de leche are some of my favorites.