Redwood Foods versions of these are sold in Holland and Barrett, Asda and wholefoods shops. Gravy granules. Just because you're feeding a vegetarian or vegan doesn't mean they have to have 'vegetarian' gravy (you know, the thin watery stuff that looks like a dissolved vegetable stock cube).
If your tongue is stained black or dark brown it may be caused by medications and certain foods/drinks. Drinking several cups of coffee or tea per day may stain the tongue; some people who supplement with green drinks containing chlorophyll may notice a very green tongue.
This is because there can be many causes for a black appearing tongue. It doesnât necessarily have to be black, but can also appear yellow or brown. It can also be accompanied by bad odor or even have fuzz on it. People also complain of a bad or metal taste in their mouth.