"Has Hagrid been here as well?" he asks absently rummaging in the cupboard. "I've heard stories about his rock cakes." He turns, holding a bottle. Say what you will about McGonagall (and he does, just not out loud where she can hear) he can't fault her taste in scotch. Rodolphus accios a glass and pours. "Can I get anything for anyone else?"
He sniffs the glass suspiciously. It would be criminal for Severus to have tampered with this, and Rodolphus shoots him a 'look' that lets him know that. He takes a cautious sip. When he doesn't start foaming at the mouth or sprout asparagus from his ears, he takes a deeper drink. "If you want to eat in, there's always fish," he reminds Severus with a smirk. "Or I could get that squid. I've a fondness for calamari."