Bobby had the same concern about the punch, and after having poured one cup he brought it to his nose for a quick sniff. There didn't seem to be anything out of the ordinary about it, even though the only alcohols he was familiar with were ones he cooked with. Any change in ingredients in any concoction though changed something about the result though, he knew that from Potions. The punch seemed fine.

He sorted out a second cup and brought it to Jools, making sure not to spill any. "It's all clean," he assured her. "I don't think the drink-spikers have rolled out of bed yet."