Boozy Mudslide Shake
Vodka, Baileys, Kahlúa, ice cream energy.
The dessert cocktail your aunt orders on a cruise. We made it work.
Bench-tested by the Will It Slush? team · Last revised July 31, 2026
Ingredients
Scale the batch — amounts update live in your units.
- Vodka150 ml
- Coffee Liqueur (Kahlúa)120 ml
- Irish Cream (Baileys)120 ml
- Whole Milk295 ml
- Chocolate Syrup (2:1)90 ml
- Water525 ml
- Vodka (to fortify)135 ml
- Sugar (to taste)16.9 g
Method
- 1.Combine in Slushi on Milkshake mode, 45 min.
- 2.Chocolate-drizzled glass; whipped cream on top.
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Notes from our testing
Baileys is 17% ABV and roughly 25 Brix — it is both your alcohol and half your sugar.
Cream liqueurs are the trickiest category in the machine because they carry alcohol, sugar and fat all at once. Baileys sits near 17% ABV and 25 Brix, so three ounces contributes meaningfully to every one of the three variables that decide whether a batch slushes.
Our build is 2 oz Baileys, 1.5 oz vodka, 1.5 oz coffee liqueur and the rest whole milk, coming out around 10% ABV and 12 Brix. No added syrup — the liqueurs cover it entirely. Adding syrup on top of this build is the classic way to make a mudslide that stays liquid forever.
Do not let it sit warm. Cream liqueur curdles on contact with acid and it also separates if it sits in a slowly cooling chamber, so build cold and start the machine immediately. If you see graininess in the finished slush, that is separation, not ice crystals, and it will not scrape out.
Chocolate syrup around the inside of the glass before dispensing is worth the ten seconds. It is the only visual this drink gets, since the slush itself comes out an even beige.