To encourage that touch, Yussa slides his leg closer to Caleb. He considers his answer, trying to remember precisely what he'd done up to that moment.

"I was trying a different combination of components to test the stability of a spell," he says at last. "Something new I brought back with one of ones I had been working with before."

The new component being one he hadn't worked with directly before. Yussa holds his cup against his bottom lip and frowns.

"I don't think I mixed up any of the bags." It's possible, though. He'd been taking notes as he was reaching for things. "I'll need to go back to the workshop to look."

Thankfully he hadn't knocked everything off the table.