2ounceVanilla-flavored Vodka (such as Stoli) or can use lemon vodka like Asolute Citron
1ounceLiquor 43 (Spanish Vanilla Liquor)
1-2ounceHalf-and-Half (best) or cream (heavy, whipping or light cream)
1/2ounceKey lime juice
1/4ounceSimple Syrup
Optional Substitution: substitute Rosa's Sweetened Lime juice for the lime + simple syrup
Optional: Crushed Graham Crackers to rim the glas
Instructions
Optional: Wet the rim of the cocktail glass with lime or water. Place finely crushed graham crackers on a plate, and tilt the outside rim of the glass into the mixture so that it coats the outer rim. If you don't have graham crackers you can use granulated white sugar with lime zest in it.
Add all ingredients to the shaker, then cover and shake until the outside of the shaker has frosted.