Add 40ml Amaro Montenegro and 40ml mezcal to a mixing glass.
Fill the mixing glass with ice and stir for approximately 30 seconds until well-chilled and properly diluted.
Strain into an old-fashioned glass over a large ice cube or chunk of block ice.
Express an orange zest twist over the surface of the drink to release its oils, then place it on the rim or drop it into the glass as garnish.
The magic here lies in the equal split - neither ingredient dominates, so choose a mezcal with enough smoke and character to hold its own against Montenegro's complex herbal sweetness. An orange twist is preferred over lime, as its oils echo the amaro's bitter orange notes.
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