When it comes to comfort food, nothing beats a good gravy. Whether poured over a roast dinner, a pie or some chips - there are so many ways to tuck into the classic dish. But there's a secret to ...

Crushed tomatoes make a smooth gravy, but any canned tomatoes work; you can blitz them in a blender or food processor if desired. Heat the olive oil in a heavy skillet over medium heat for a few ...