Arcturus nodded gratefully as Draco explained where it was that he got his supply of tea from. He hoped that the shop would be a pleasant place. Helping with the shopping had been one of his responsibilities when he had lived with his relatives from the future. (They had discovered fairly quickly that while any mention of chores provoked indignant, sulky objections from the young wizard, he was far more amenable to being responsible.) What he had learned was that some shops of the future, largely the muggle ones, were loud, confusing and alarming places, but that markets and smaller establishments were less likely to trouble him. 'I shall visit it as soon as I am able,' he told Draco brightly.
Then there was the tea-making, and sure enough, the heating charm was much like the one that Monty Carrow had botched, and that he'd seen glimpses of in kitchens without elves. It was women who were supposed to take charge of such things in such cases, in his opinion, but unless Aunt Cassiopeia or one of his female relatives or friends from home suddenly appeared, there wasn't a great deal to be done about that either. Arcturus watched Draco closely, trying to commit the precise wand movement to memory. He wasn't bothered in the slightest by the wand-drawing, accustomed as he was to magic being used for practically everything. Te second charm seemed deceptively simple, a small movement for a complex spell. He doubted he'd have that one right on the first try!
'That's awfully clever,' he said, genuine admiration in his voice. 'I expect it takes a few more steps, back home. I do like to see advances in magic.' He settled into one of the offered chairs, sitting straight-backed and retrieving his own wand from his robe pocket. With a gentle wave, he tipped milk and a little sugar into his cup. Then he laid down the wand, took up the cup, and took a sip.
'It's very good,' he confirmed. 'Thank you. Do you know, some of the other wizards from the future that I met before spent months bleating on about the so-called progress of muggle machines and muggle ideas everywhere before they thought to tell me that you'd found a cure for dragon pox! We had it at Hogwarts one year and four died in Slytherin alone.' Arcturus shook his head. 'That sort of thing is the real progress.'