Pour fresh ice into your highball glass until it's roughly three-quarters full. Using fresh, quality ice matters because it stays solid longer and prevents the drink from becoming watered down before you finish it.

Pour 1.5 ounces of Jack Daniel's Tennessee Whiskey into a jigger or shot glass. Measuring ensures consistency and prevents you from pouring too much, which can overpower the cola.

Slowly pour the measured whiskey into your ice-filled glass. Pouring slowly allows the whiskey to distribute evenly and helps it chill quickly.

Grab your Coca-Cola and open it carefully to preserve the carbonation. Opening right before pouring ensures maximum fizz in your final drink.

Pour 4 to 5 ounces of cola over the whiskey and ice, filling the glass nearly to the top. The exact amount depends on how strong you like your drink; use less cola for a stronger taste and more for something lighter.

Use a bar spoon or regular spoon to stir the drink gently for about 5 to 10 seconds. Stirring combines the flavors without agitating the drink so much that it loses carbonation.

Drop a fresh lime wedge into the glass or place it on the rim. The lime adds visual appeal and gives you the option to squeeze it into the drink for extra flavor.

Take your first sip and see if the balance works for your taste preferences. If it tastes too strong, add a splash more cola; if it tastes too sweet, add a bit more whiskey next time.