Prepare the Glass: Fill a highball glass or a large tumbler with ice to chill.

Mix the Ingredients:

Pour 2 oz of bourbon over the ice.

Add 2 dashes of Angostura bitters.

If you’re using a lemon or lime wedge, squeeze it into the glass now. This adds a fresh zesty note that complements the grapefruit soda.

Add the Soda: Slowly pour 4-6 oz of grapefruit soda over the bourbon mix, depending on your taste preference. The amount of soda can alter the strength and sweetness of your drink.

Stir Gently: Stir the mix gently to combine the flavors without losing too much carbonation from the soda.

Garnish (optional): Add a slice of grapefruit or a twist of lime or lemon on the rim of the glass for an extra touch of flair and flavor.