Bishul on Shabbos in the Kovno ghetto - v1 #5 by R' Aaron Cohen

A student of Rav Oshry by the name of Yaakov, was given the opportunity to work in the kitchen where food was prepared for the Jews. This would allow Yaakov to avoid the excruciating work that Jews were subject to, and would also give him greater access to food, which would increase his chances of survival. Would he be able to work in the kitchen even though he would be forced to cook on Shabbos? And, if he was allowed to cook the food on Shabbos, was he allowed to eat it?

Reference Material (pdf)