Add all gin, apple cider, lime juice and bitters to a rocks glass. Stir. Add ice, top with ginger beer and give another quick stir. Garnish with dehydrated apple slice.
Notes
To enjoy this cocktail warm, heat apple cider in a heavy-bottomed pot over medium heat until desired temperature is reached.
Build your cocktail in a mug by adding amaretto, rye whisky, aromatic bitters and topping with warm apple cider.