Orange drink. Simple.
What is that orangish drink Magnus Carlsen always has?

The reason he drank it, was most likely because Kasparov coached him at the time, and Kasparov has been known to "promote" orange juice due to the vitamins and what-not.

I remember Bobby Fischer drank phenomenal measures orange juice at Reykjavik when he played the historic championship match against Boris Spassky!

the souls of former world champions
I wonder has any mad chess scientist tried to clone a top GM. Can we say the "Clone Wars"....... ouch!

It is orange juice mixed with water. It keeps the bloodsugar level stable over a long period of time. It's necessary for his performance and concentration.
If he is very exhausted after a long game, as we saw in the Grenke play off, he might change to Cola if he feels that the bloodsugar has become too low and he needs quick carbohydrates.
I'm curious too.
Countries besides the usa seem to get all the tasty drinks (I only drink beer and liquor)
Japan had a drink called Pepsi dry... Pepsi without the sugar
Sounds dope
So what's this orange drink? Not a mix. It's jn a bottle with a label