QUORN

The short explanation is that Quorn is a “mycoprotein” fermented in vats from a fungus found in soil. A fuller – but still heavily truncated – one is that it is made from a strain of the soil mould Fusarium venenatum by fermenting it, then adding glucose, fixed nitrogen, vitamins and minerals and heat-treating it to remove excess levels of ribonucleic acid. (In other words, it is a long way from what the phrase “plant food” may seem to denote.)