SlushMaker .co.uk

Lab notebook

Slush guides

The science of slush, choosing and looking after a machine, parties and frozen cocktails — written from the makers’ manuals and official UK guidance.

Read this first Slush safety & health: glycerol, sugar, allergens and alcohol What the Food Standards Agency says about glycerol in slush drinks and young children, how much sugar is in a cup of slush, allergens, keeping alcoholic batches away from children, cleaning and electrical safety — with links to the official sources.
  1. 01

    The science

    How slush machines work: sugar, freezing point and alcohol

    Why slush needs sugar, what Brix means, why alcohol stops a drink freezing, and what is going on inside a compressor slush machine — explained without the jargon.

  2. 02

    Ninja SLUSHi

    The Ninja SLUSHi range explained (UK, 2026)

    Original, SlushAssist, XL, MAX and Twist: what each Ninja SLUSHi model is, its UK model number, how much it holds and how strong a cocktail it takes.

  3. 03

    Buying guide

    Choosing a slush machine: size, cocktails, one flavour or two

    Five questions that narrow the choice: how many drinks per batch, one flavour or two, frozen cocktails or not, presets or one button, and whether you also want soft serve.

  4. 04

    Adults only (18+)

    Frozen cocktails and vodka slushies: strength, units and machine limits

    How strong a frozen cocktail can be before it won’t freeze, how to dilute spirits properly, and how to work out the UK units in every glass.

  5. 05

    Honest answers

    Sugar-free and low-sugar slush: what works and what doesn’t

    Why diet drinks won’t slush in a home machine, which sugar alternatives Ninja lists, why glycerol isn’t the answer for children, and how to keep the sugar per cup down.

  6. 06

    Care

    Cleaning & troubleshooting: icy slush, no slush, flashing lights

    How to clean a slush machine after each batch, what the Ninja SLUSHi’s warning lights mean, and how to fix slush that is icy, runny, slow or stuck.

  7. 07

    Hosting

    Slush party planning: batches, timings, labels and keeping it safe

    How many batches you need, the running order that keeps children’s slush and cocktails apart, labelling, allergens and what to know if you are selling slush at an event.

  8. 08

    Big batches

    Commercial granita & slush machines: are they worth it at home?

    What the big two-bowl “2 × 12 L” slush machines are, what to check before buying one online, and the glycerol warning rules if you sell slush.

FAQ Glossary Sugar & units calculator