His eyes light up when Bucky freely offers the bowl of soup without Link having to actually ask. Were he a wolf right now, there might just be a Pavlov's dog reference to be made here; the boy looked like he was about ready to start drooling (even though he's eaten but soup though). He nods furiously in response and whips out his empty bottle in a jiffy. Soup? Of course he would like some!

... Oh, would he mind if Link just dipped his bottle into the pot? Coco and Yeto hadn't minded but it might look weird to anyone outside of Hyrule. And he wouldn't want to offend someone who was offering him one of the best foods known to mankind.