Nuka-Cola

Nuka-Cola
&nbsp Nuka-Cola is a drink based off of coca-cola despite being hundreds of years old and usally irradiated. Many people (including Twig) drink it.

In the pilot episode we first see Nuka-Cola when Ben hands Twig a bottle of irradiated water which he imagines it's Nuka-cola and drinks it only to be sick afterwards. We see it later on in the pilot episode when Twig takes it out a bag from the bounty hunters he killed. When arriving in Eastwood Twig buys three bottles of Nuka-Cola from an old man. When Twig goes back to the shop in Eastwood he buys a Nuka-Cola Quantum

Twig's Addiction
Twig is addicted to Nuka-Cola which is basically what the entire series is about he drinks any Nuka-Cola even if it is irradiated. He is addicted to it because it's what he would always drink in his vault.