What is "twiglets"

Twiglets are a wheat-based snack with a "distinctive knobbly shape" similar to that of a small twig. The taste of Twiglets derives from the yeast extract used in its coating, and has been compared to that of Marmite. They are marketed in the United Kingdom and packaged in 24 g, 45 g, 105 g and 150 g bags and in 200 g tubs.