Grizzly old Sheffield once had been hitting the bottle of whiskey a bit too hard. He was an alcoholic in his youth, a choice that cost him the health of his liver. Now no longer allowed to drink booze due to the intervention of his doctor, Sheffield turned to a brand of soft drink, Nuka-Cola, to help him get the feeling of the high life he desired. He became addicted to the ingredients in the soda, depending on the caffeine to help him stay awake.
ps4 If spoken to after being recruited to a settlement, Sheffield may repeatedly thank the Survivor for the Nuka-Cola, even if the bottle is taken from his inventory.[verified]
ps4 If assigned to work as a trader you will not be able to access the store. He will simply talk about Nuka-Cola instead. (NOTE: Sheffield does work as a trader, though there are hiccups due to his character never being assigned merchant dialogue. Half of his dialogue leads the Sole Survivor offering to come work for him and Sheffield repeating his thanks for Nuka-Cola, the other half leads to the barter screen.)[verified]
xboxone After giving Sheffield a Nuka-Cola, when asking Sheffield to come work for you, he may inexplicably refuse, saying "I ... I don't think so...".[verification overdue]