England will start as favourites, notwithstanding a dead pitch or a resurgent Australian side seeking to give outgoing captain Michael Clarke a fitting farewell. Broad has his own ideas on what might constitute a fitting farewell, having dismissed Clarke more than any other test bowler. "Like, 11 times or something," he grins. There is time yet to make it 13."
Talk of the future naturally leads to a discussion of Broad's own intentions. He was left out of the one-day side this summer but remains available for selection, with a home World Cup in 2019. "I'll be 32 when the next World Cup comes around. I certainly want to play one-day cricket going forward."
Yet whatever he goes on to achieve, you feel that the feats of 2015 have already made his legacy.
He is not preoccupied with it, but more than most athletes, he has a keen sense of how others see him. His last home Ashes series in 2013 was tainted by the controversy over his decision not to walk at Trent Bridge after edging to slip. So there was a certain satisfaction in taking eight for 15 at the same ground.
"The 2013 series was remembered for me not walking, which I thought was a little bit unfair. If I'd finished after 2013, it would have frustrated me.
"The biggest thing about the eight-for is that it probably puts that Trent Bridge memory to bed a little bit."
And when he finally, reluctantly, hangs up his boots, you get the feeling that crazy first morning will be foremost in his thoughts.
"You get those sorts of spells once in a lifetime. To do it against Australia at my home ground - it's not even a dream come true, because I'd never have dreamt I could do something like that."