Add gin, Campari, and vermouth in a lowball with ice. Stir until chilled.
Flame the orange peel over the glass.
Wipe the rim with the orange peel, drop in and drink.
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Notes
You can juice the orange and add a splash of the orange juice for a little sweetness to temper this drink.
When cutting the orange peel, make sure there is as little pith as possible as it’ll taste bitter.
If you’re not confident that you’ll slice a thin orange peel with a knife, you can use a vegetable peeler.
To help your drink stay cold longer, you can place your glasses in the freezer beforehand. If you didn’t put the glasses in the freezer early enough, you can also fill the glasses with some water and place them in the freezer while preparing to make the drink for a quick chill.
Feel free to double or triple the Negroni recipe, just be sure to use a larger glass to mix your ingredients.