Start by selecting your old fashioned glass.

Place the fresh peach slice in the glass and gently muddle it with the muddler or a spoon.

Pour in the peach simple syrup over the muddled peach.

Add two dashes of Angostura bitters to the mix.

Measure and pour 2 ounces of your chosen whiskey into the glass.

Add a large ice cube to the glass.

Using a bar spoon, gently stir the mixture.

Finish by adding an orange twist as garnish.