Frozen Irish Coffee
By Marty Cole Β· May 12, 2026
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Cold rainy Saturday plus leftover morning coffee equals this Frozen Irish Coffee out of the Ninja Slushi, which is a sentence I'm proud of. Whiskey, cooled coffee, and sweetened condensed milk freeze into a creamy, slushy coffee drink that tastes like a boozy frozen latte. My buddy Sean, who is actually Irish and therefore a tough crowd, gave it a nod, which is basically a parade. This is for grown-ups only. Make sure the coffee is fully cooled before it goes in, because warm coffee fights the freeze and you'll be standing there waiting forever.
Your machine size
Slushi 64 oz (Standard) Β· quantities scaled Γ1
β οΈ Over the hard-spirit limit
~8.0 oz of 40% spirit exceeds the ~7.2 oz max for this batch size. Dilute or scale down the liquor.
Ingredients
- Irish Whiskey8 oz
- Brewed Coffee, Cooled20 oz
- Sweetened Condensed Milk8 oz
- Cold Water10 oz
- Whipped Creamoptional1 garnish
- Cocoa Powderoptional1 dashes
Makes ~48 oz Β· est. 7.0% ABV
Directions
- 1Whisk the whiskey, cooled coffee, condensed milk, and water until smooth.
- 2The condensed milk adds both sweetness and the sugar needed to freeze.
- 3Pour the mixture into the Slushi vessel below the max line.
- 4Lock the lid and choose the SPIKED SLUSH preset.
- 5Let it churn until creamy and frozen, about 42 minutes.
- 6Dispense, top with whipped cream, and dust with cocoa.
Tips
- Pour your cooled, sweetened condensed milk mixture into the Slushi bowl at room temperature, not cold, so the machine can properly churn and freeze it to the right slushy texture.
- If your slush comes out too thin, it likely needs more time churning, so give it an extra 10-15 minutes before dispensing.
- Stir in the Irish whiskey last, right before pouring into the bowl, to keep the alcohol content balanced and help the machine churn evenly.
Variations
- Use cold brew concentrate instead of regular brewed coffee for a deeper, less acidic flavor that pairs well with the sweetness.
- Swap the sweetened condensed milk for dulce de leche for a richer, caramel-forward version that tastes like Irish coffee dessert.
FAQ
- Can I make this lighter or less sweet?
- Yes, replace half the sweetened condensed milk with regular cold milk or cream, which gives you a smoother texture while cutting the sweetness. You can also reduce the whiskey if you prefer, though it helps balance the condensed milk's richness.
- What if my slush won't freeze or come out too watery?
- Make sure you're pouring room temperature liquid into the bowl, not pre-chilled, and let the machine churn for the full 20-60 minutes. If it's still watery, your bowl might not be cold enough; run the machine empty for 5 minutes before adding your liquid.
- Can I use instant coffee instead of brewed?
- Yes, dissolve instant coffee in a bit of hot water, then let it cool completely before mixing with the condensed milk and water. Use about half the amount you would for brewed coffee and adjust to taste.
- How long can I keep the finished slush in the machine?
- The slush stays best for about an hour after it finishes churning. After that, it can separate or get icy; for longer storage, pour it into a freezer container and refreeze, though you may need to churn it again to get back the smooth texture.
Nutrition
Per serving Β· makes about 3 servings Β· estimated
Ratings & Reviews
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Meet Marty Cole
I'm a home cook who got a little obsessed with the Ninja Slushi and Creami. I test every recipe in my own kitchen on a real machine, dial in the texture, and only post the ones my family actually finishes.
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