CoffeeBox introduces the Espresso Martini through its combination of espresso, vodka, coffee liqueur and optional sweetening. The coffee contribution is more specific than a generic roasted aroma: its bitterness, acidity and concentration interact with the sweetness already present in the liqueur. A particular roast is a preference, not a compulsory ingredient.
For a useful comparison, keep the cocktail recipe consistent and change the coffee alone. A chocolate-led espresso may integrate differently from a sharper fruit-forward shot. Account for dilution and temperature as well as sweetness; an attractive foam layer does not prove that the drink is balanced. The source's trend and origin anecdotes should remain separate from a verified historical account.
Caffeine does not sober someone up or restore coordination and judgment affected by alcohol. Feeling alert after a coffee cocktail is therefore not evidence of reduced impairment, and the drink is not a safe way to extend a night of drinking. This article explains flavor structure rather than prescribing alcohol consumption. A coffee-focused alcohol-free drink can offer a different way to explore bitterness, sweetness and texture without claiming it is identical to the cocktail.
The conversation
A good question can make a better brew.