A homemade milkshake usually fails in one of two directions: too thin to be worth the washing-up, or so thick that the straw is decorative. Both are fixable with technique rather than equipment. The glass matters more than people expect, because a thick drink behaves nothing like a thin one.
The ratio that actually works
Start with roughly three parts ice cream to one part cold milk by volume and adjust from there. Blend in short bursts rather than continuously, because a blender that runs for a minute warms the mixture and thins it. If it looks slightly too thick in the jug, it is about right by the time it reaches the glass.
Everything should be cold before it starts
Warm milk from a cupboard, or ice cream that has been softening on the worktop, guarantees a soupy result. Chill the milk, keep the ice cream properly frozen until the moment it goes in, and consider chilling the glass in the fridge for ten minutes. Not the freezer, and not if anything warm is going in afterwards.
Why the tall waisted glass exists
Thick drinks move slowly and need a column so they do not spread into a shallow puddle that warms instantly. The waist gives a grip on a cold, heavy glass and the wide mouth leaves room for whatever you pile on top. A handled jar glass from a range such as NETANY does the same job with the added benefit of a lid if you want to take it outside.
Straws and thick drinks
A narrow straw with a thick shake is simply hard work. Wide-bore straws exist for this reason, and reusable glass ones are made in a couple of diameters for exactly that difference. Check any glass straw for chips before every use, because a chipped edge cuts a lip or a tongue without warning, and a cracked one goes in the bin rather than back in the drawer.
Flavours without a syrup collection
- Frozen banana instead of some of the ice cream, for body without extra sweetness.
- A spoon of instant coffee dissolved in a splash of hot milk, then cooled.
- Cocoa powder bloomed in warm milk first, or it stays as gritty specks.
- Frozen berries, blended and then sieved if you dislike the seeds.
- A pinch of salt, which does more for a sweet drink than another spoon of sugar.
The washing-up problem
Milk dries into a film that survives a quick rinse and eventually smells. Rinse the blender jug, the glass and the straw with cold water first, because hot water sets dairy protein onto the surface. Straws want a purpose-made brush pushed all the way through, not a hopeful swirl of soapy water.
Serving without the mess
Pour from the blender jug into the glass in one steady movement rather than in stages, and stop a centimetre short of the rim. If the shake is stiff enough to hold a spoon upright, serve it with a spoon and stop pretending. A lid turns the leftovers into something you can put in the fridge for an hour without it skinning over.
When to just buy one
If you make a shake twice a year, the blender, the ice cream and the specialised glass are all a poor investment. Buy one from a place that makes them properly and keep the kitchen for things you do weekly. The equipment argument only makes sense once the habit is real.