Zuko took the herbs from her and after pulling some cabinet doors open, drew out two cups. He filled them with water from the tap and set them down, pulling out various herb bottles after inspecting the labels and sniffing the ones he couldn't read, being that he was still in the process of learning how to read the language.
He mixed various amounts of the selected herbs into the water, using a spoon he'd located to blend it all together. Once that was done, he put his palms to each glass and bended some heat into his hands until the liquid began to boil. It did that for a few minutes until he was satisfied with it, then bended a good portion of the heat out of it so that the liquid was now warm, but not so much that it would burn one's tongue.
Picking up a glass, he held it out to her. "I hope you like tea."