Here is a new feature I'd like to call "Capt. Charlie's Questions... sailing the seas of curiosity." I really wish I had a cool little theme song to go with this, but I'm not that technically savy and I probably wouldn't put the time into it if I was.
So... What is Capt. Charlie's current question?
Why does milk look white in its natural state, then turn a strange yellow color when frozen, then return to white when thawed?
Admittedly, I do not know the answer to this one, and I have never really thought about it much. If anyone out there is an aspiring Harold McGee, please enlighten us. Then Capt. Charlie can again sail the seas of curiosity to other unanswered questions.
regular milk
frozen milk
Yup. That certainly does look rather yellowish.
If I had to guess at this, I would say it had something to do with the fat content and probably (or obviously) the way the light is refracted once it's frozen into a crystal lattice. Maybe I should try it side by side with skim milk to determine any noticeable difference.

