Holding a scent workshop to launch her latest fragrance, Katy Perry arrived at London’s Rosewood Hotel on last week.

While rocking a teal Versace dress, the “Firework” singer teamed up with perfumer Pierre Negrin to answer fans questions about her new scent and general fragrance knowledge.

“I’m very curious — whenever I do something, I want to know about the whole process, how it happens — do you take those flowers [in the fragrance] and just steam the oil out? How does that happen, how do you get there?”

Perry helped re-create her fragrance from various editorial notes. The scents include pink freesia, jasmine and blackthorn, which Katy chose for its supposed “mystical properties.”

“They used to use it in the Middle Ages to cast spells with it, so I’m all about that,” Perry stated.

Perry also chatted about her fashion icons, “I like Liz Taylor, and I love the spontaneous excitement of Daphne Guinness and the punk rock…of Chloë Sevigny.”