Place espresso, ice cream, biscuits and ice cubes in a blender. Blend until smooth, adding milk to thin out the milkshake if needed.
Transfer the milkshake into a serving cup, top with whipped cream and crushed biscuits before serving.
NOTES
- 1 espresso shot is equivalent to 30 grams/ml (or 1 ounce) of espresso. If you only have instant coffee, double the amount of coffee grounds needed to make 30 ml of coffee.- You can use whichever ice cream flavour you like to create your own unique milkshake. I used cookies and cream ice cream this time round, but vanilla, chocolate, or maybe even banana (though I've not tested this) will work well here.