Rice is the most common (and gluten free), but barley is also used, which is the one to look out for. You don't need to know how to pronounce it to know what a great addition Worcestershire sauce ...
Worcestershire Sauce- Yes this is gluten-free if stated on the bottle (i.e. Lea and Perrins manufactured in the US). If you want to keep this vegetarian, try gluten-free tamari soy sauce instead.
“I like to reduce the cost by using half mince and half lentils and once again use gluten-free stock cubes. Some recipes call for Worcestershire sauce and you can buy a gluten-free version but ...