Lily gave a sort of weak laugh at his joke, shaking her head at him. "I know. It's a rather peculiar talent of yours. But you know that I don't give up easily when it comes to things I want to know." Or when it came to the people she cared about. And Sirius and what had happened to him fell into both of those characters.
"If we can't find alcohol - tea will have to do." She knew there were people that claimed they could magic beverages into alcohol but she didn't put any faith in that claim herself.