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3 min prep · 55 min freeze 6 servings easy
Flat tonic is essential — the Slushi can't process bubbles, and tonic loses its bite anyway when frozen. We rebuild it with quinine syrup and a citrus oil expression.
Verdict for
It slushes!
Your drink hits the sweet spot. Pour and pulse.
✅ SLUSHES
Alcohol
9.5%
target 8–14%
Sugar density
12.1 g/100ml
target 11–13 g/100ml
Volume
995 ml
33.6 oz
Sugar
121 g
total
Alcohol9.5% / target 8–14%
Sweetness12.1 g/100ml / target 11–13 g/100ml
Ingredients
Scale the batch — amounts update live in your units.
6
servings
- London Dry Gin235 ml
- Tonic Water (flat)530 ml
- Fresh Lime Juice60 ml
- Water120 ml
- Sugar (to taste)76.7 g
Batch volume945 ml
Method
- 1.Flatten the tonic overnight.
- 2.Combine in Slushi on Spiked Slush, 55 min.
- 3.Express a grapefruit peel over each glass.
Need the gear?
Amazon picksThis recipe is dialed in for the Ninja Slushi family. Pick your machine:

Ninja SLUSHi Max XXL
The big-batch flagship
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Ninja SLUSHi Twist
Dual hopper, two flavors at once
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Ninja SLUSHi Original
The compact countertop classic
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