Identify the drink you’re making (stirred, shaken, or digestif) and note whether you want the swap to keep orange brightness or just the bitterness.
Choose the substitute from the list based on profile match (orange-citrus + herbal bitterness for closest behavior).
Start with a 1:1 ratio, then adjust: if it’s too bitter, dilute with a splash of orange juice or syrup; if too sweet, reduce the amaro and increase your mixer.
Taste and lock it in before serving—amaro differences show up fastest in the first sip, especially in cocktails.