"Just a little longer," he said, stirring on and on. He didn't say anything else until he took the spoon out and peered into the small cauldron. "Here we go," he said, ladling some out into a cup. He brought it into the room and handed the cup to Richard. 

"What's this?" Richard pulled it forward to sniff, but The Dante pushed it toward his mouth.
"Have a drink, everyone's doing it. Adelfonsus just took a good swig."
"Oh! Did you, Addie?" Richard gave him a wink and downed it in one go. "So what's it going to... oh! Oh." His face slackened for a moment, and then his eyes widened. "I see," he put his head in his hands, "Ugh, what happened just now?" 

"Love potion," Dante explained. "Then Antidote. You two sticking around? Finch was about to tell us about Professor Clowers."