Carbonated water** - The base of root beer, providing fizziness. Sugar or sweeteners** - Typically cane sugar, high fructose corn syrup, or artificial sweeteners Sassafras extract** - A key flavoring ingredient that gives root beer its distinct taste. Vanilla** - Adds a smooth and creamy note. Wintergreen** - Provides a minty flavor and a refreshing finish. Cinnamon** - Adds warmth and spice to the flavor profile. Nutmeg** - Contributes a slightly spicy undertone. Licorice root** - Often used for a hint of sweetness and unique flavor. Other spices and flavors** - This can include ingredients like anise, clove, or birch bark, depending on the brand and recipe.