Answer:
He wants 2 cans of condensed milk.
Explanation:
"Condensed milk" is a story inside of "Kolyma Tales” by Varlam Shalamov, this specific story talks about a group of miners who were prisoners, there a camp geologist named Shestakov asks the protagonist to help him escape, he knew this was not a good idea but he agreed in exchange of two cans of condensed milk.