Costco's Kirkland Signature Traditional Eggnog Liqueur is made with real dairy cream mixed with spiced rum, whiskey ... around the same as eggnogs by brands such as MS Walker and Evan Williams.

1.5 oz. aged rum 1.5 oz. coffee liqueur ~2 oz. h eavy cream, semi-whipped so its thicker but still pourable Combine rum and liqueur in a mixing glass with ice and stir 15 to 20 seconds until chilled.