She got it wrong? But it's paper! This whole money thing is entirely too complicated for her!

"Well, I..." She switches hands, holding out the nut bread instead. "I do have this. It's homemade! Made it fresh this morning!"

Sure enough, it looks fresh. The aroma of sugar and walnuts wafts in the air as she holds it out.

The clerk takes a sniff, and their expression lightens. Looks legit. All right, you're in. There's an implied now get out of the way, you're holding up the line as they snatch the bread and take a bite.