Red brick chunk

Brick is so ubiquitous in London it could be an element. The alchemists thought so, carefully making ‘oil of brick’. What might this infusion do? Ceramic brick has been vitrified – baked up to a temperature that has fused the silica and alumina together – melting and re-crystallising them to make rock. The ceramic should not impart anything to the oil apart from brick dust from the surface – unless homeopathic doses of brick is what you’re after. Perhaps oil of brick in an ointment might make a placebo ‘London Salve’ – something to inoculate you against the city blues, or the hardness of the environment. I wonder what percentage of London brick I might be?