Gretel gave his hand a squeeze and pressed a soft kiss to his shoulder before gently extracting herself, turning to grab her mother's book. She'd already shown it to him, but going through the spell step by step with a visual aid was probably best for him right now.
"For as powerful as it is, the process is actually pretty simple," she told him, opening to the right page. She spread the book over both her thigh and his. "Add the ingredients in a wooden bowl, bless it with fire, mix the tonic, and the receiver drinks." There was an incantation as well, but that was a given.
"See this note..." Gretel added, pointing to a scratched paragraph in old German at the corner of the page. "My mother's writing. It says she gave this to my father when they met- he was a soldier who never slept because of the demons he brought back from war. Afterward, he became a farmer. As far as I remember, I never saw a sword or gun in his hand."