Powder to the People

Powder to the People is an unmarked quest in Fallout: New Vegas.

Walkthrough
When talking to Siri, a female slave working for Caesar's Legion at The Fort, she will tell you about her tough life and how she is in charge of feeding and healing her legionary masters. She says she does with with her (ineffective) healing powder. With a positive Legion reputation, you can get it from her. Even better, with a 20 Survival skill, you can tell her how to improve the recipe, by only using one broc flower for every one xander root. The player can then return to her, once a day, to get some free healing powder. If she is given the better recipe, it will have greater potency.