TIL that using hot water actually makes ice cubes cloudy, not clear

I always thought cloudy ice was just air bubbles from the tap or something. But I saw this guy on YouTube who makes clear ice for fancy cocktails and he explained that hot water holds less dissolved air, so it freezes clearer. Tried it myself last night with boiled water from a kettle. The ice came out way more see-through than my usual cubes. Never would have guessed that in a million years. Anyone else try this trick and notice a difference?

2 comments

2 Comments

nora_wells5815d ago

Wait, doesn't boiling the water just add air back in while it cools? I tried this and my ice still came out cloudy. Think it's more about how fast it freezes than the water temp.

fionarodriguez15d ago

Have you tried letting the boiled water cool down in the fridge with the lid on? I used to have the same problem until I started doing that. When you boil the water, you're getting rid of most of the dissolved air, but if you let it sit out uncovered, it'll suck air right back in as it cools. The freezer speed matters too, but I think the water quality is actually the bigger factor. Cloudy ice is usually from minerals and trapped air, not just how fast it freezes. If you use filtered or distilled water and boil it first, you'll get clear ice almost every time.