He was actually interested! There were few things Ulma loved more than a captive audience for her plant-related ramblings, and she had one right here. Her smile only got wider, her wrinkles creasing her face in strange and not entirely appealing ways. She leaned on her walking stick as if it was a podium, and launched into her theory.
"The berries, you are to be seeing, are sweet but..." She rubbed her fingers together. "Feel like sand, ah, gritty, when they are to be dried and eaten, and this, I am to be thinking, is how they cure the stomach ache. I am no doctor, but it is clear that stomach ache is from bad foods, and the berries help to be digesting, so the bad food is not long in the stomach. There are people who are to be saying different..." She narrowed her eyes and spat onto the ground. "But those people are stupid, wrong!"