What is the most interesting thing that you have frozen?

Question: What is the most interesting thing that you have frozen?
- Keywords:
  cryogenics,
  work
Asked by Zoe to Fahim on 15 Nov 2019.
- Fahim Dhalla answered on 15 Nov 2019:
  
  Hello!
  The best thing we have frozen is some strawberry yogurt with liquid nitrogen to make ice cream in the summer time! It was very tasty 😛
  Ask your science teacher to let you do the same!

Question: What is the most interesting thing that you have frozen?