The foam thing wasn't really a technique Tony had mastered, that was Cassie's incredibly patient, supportive, talented and well-endowed manager, but Tony was glad to take the credit. He would get it eventually. A whole sliver of his life and portfolio was dedicated to owning a preciously local coffee shop now; charming foam skills were a prerequisite for his entire staff. Preemptive foam credit didn't earn him a lot of mileage on Cassie's tolerance, though, and Tony had to square his hands on his hips against that frown and shrug innocently at her interrogation.
"Actually, turns out it's a great investment," he countered. "Between the office and this place, I'm paying practically nothing for the beans and I get to educate these young, open minds before they become set in their bad coffee ways. It's an epidemic, Cassie. I can't trust any of my interns with it, Pepper still makes my coffee. Do you realize how demeaning that is for her?" Tony's own argument had gotten away from him, but he was sure there was a kernel of a good point somewhere in there and he was more than ready to go on. Especially about young, open minds and what Professor Stark had to to teach them. He was willing to submit Cassie to that dark place.