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).
What You Should Do. Brown or Hairy. Brown tongue or hairy tongue is caused by poor diet and, most often, by poor dental hygiene. The area at the back of the tongue catches food debris, and over time, the debris builds up, causing a brown or brown hairy appearance. Almost all foods can potentially cause brown, hairy tongue. Brush your tongue gently with a soft bristle toothbrush or a tongue scraper.
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.