Rosie has just returned from the school run. She drops a bag of groceries on to her kitchen table, and reaches for a clear plastic cup, covered by a white hanky and sealed with a hairband. Inside is a grey powder; her finely ground homegrown magic mushrooms.

“I’ll take a very small dose, every three or four days,” she says, weighing out a thumbnail of powder on digital jewellery scales, purchased for their precision. “People take well over a gram recreationally. I weigh out about 0.12g and then just swallow it, like any food. It gives me an alertness, an assurance. I move from a place of anxiety to a normal state of confidence, not overconfidence.”