Bisto gravy powder, in the same red pack as 70 years ago, is one of those brands that seem immortal having recently celebrated its 100th anniversary. In fact, 18,000 tons (or a billion servings) are sold each year, and consumption is rising by 5% annually.

Bisto is the ultimate triumph of retro style over content; it consists only of potato starch, salt, wheat starch, colour, dried yeast, and onion powder.