"You can put schnapps and other similar alcoholic drinks in the fridge. ... If you want that to be served cold, then the only way to do that is to store it in the fridge."

Do you need to refrigerate peach schnapps?

Unopened peach schnapps may last you for years in the pantry. Just make sure to keep it in a cool place, away from direct heat. ... When it comes to opened peach schnapps, it can last for a couple of months or even up to a year. But you need to seal it tightly and store it in a cool and dry place.

Which liquors should be refrigerated?

The rule I use is: If it's under 15% alcohol or if the base is wine, it goes in the fridge once it's open. Spirits like whiskey, rum, gin, vodka, etc. don't need to be refrigerated because the high alcohol content preserves their integrity.