What makes us feel in love? And can we make ourselves feel it? Biomedic Sophie Ward sets herself the deluded task of making a scientifically-accredited love potion, with the help of neuroscientists, evolutionary anthropologists, aphrodisiac historians, and a smell scientist who really likes pumpkin pie. Ingredients: a neurochemical cocktail of oxytocin, dopamine, serotonin and beta endorphin, a metaphorical "good egg", a splash of kindness, a cup of communication, five figs, an entire tiramisu, a punnet of stewed plums and a stick of liquorice. Prescribed by the following doctors of various disciplines: Dr Anna Machin, Dr Helen Fisher, Dr Viren Swami, Dr Kate Lister and Dr Alan Hirsch. Produced by Becky Ripley