Based on the prompt hydrangeas from clare_dragonfly.
This is a fantasy story. Hydrangea flowers are toxic so please don't attempt to make the cough medicine from them.
Making a simple cough medicine was something any healer could do. It was one of the first things they were taught to make, when the first hydrangea flowers were harvested in the spring after the trainee healer's sixth birthday. When the trainees turned fifteen they would begin to learn about the other powers that a healer had but until then their time was spent memorising the recipes for hundreds of medicines. A cough medicine could include different ingredients for each type of cough that was known about.

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