Scientists reveal the formula for the perfect GRAVY - as Sir Cliff Richard claims his recipe is the 'greatest in the world'

Sir Cliff Richard hit the headlines this week after boldly claiming to have the recipe for the 'greatest gravy in the world'. Dr Nathan Kilah, a food scientist from the University of Tasmania, claims that adding ingredients like teriyaki, soy and Worcestershire sauce to your gravy can 'broaden the flavour profile.' Sir Cliff Richard has hit the headlines this week after boldly claiming to have the recipe for the 'greatest gravy in the world' Acording to Dr Kilah, the basis of any good gravy is the juice from your roasting tray. Scientists have waded in on the debate - and say that Cliff might be on to something with his recipe How to make the perfect gravy Pour the juices from your roasting pan into a jug to let the fat separate from the liquid so you can control how much fat you’re adding Don’t forget the juices from your vegetables – these have a unique ‘gravy aroma’ Add corn or arrowroot starch slowly to avoid lumps Add salt sparingly – this will be concentrated by heating Pour in a glug of red wine and a squirt of ketchup for an umami hit If all else fails, resort to instant gravy Once you've combined your meat and vegetable juices, the next ingredient to add is flour, which will help to thicken up your gravy.