For many, nothing tops off a comforting tea of cheese on toast quite like a sprinkle of Worcestershire sauce.

But the iconic manufacturer Lea & Perrins has now revealed that if you're garnishing the melted cheese with their condiment, you're using it wrong.

According to the sauce experts, the tangy condiment must be applied to the bread before the cheese is added in order to caramelize the toast.

'For 190 years we've known where the sauce belongs - directly on the toast,' Thiago Rapp, the firm's 'director of taste elevation' explained.

To remind those daring to top off their toast with the sauce, a new limited edition label will prompt them to stop.