Combine the Dry Ingredients: In a large bowl, combine the TVP, pea protein, beetroot powder, garlic and onion powder as well as the MSG. Mix well to ensure all the dry ingredients are evenly distributed.
Add the Wet Ingredients: Pour in the water and give the mixture a rough stir. Then, add the dark soy sauce and marmite. Mix thoroughly until there are no dry bits left and the mixture is well combined.
Hydrate and Rest: Cover the bowl and let the mixture rest for at least 30 minutes. This allows the methylcellulose and TVP to fully hydrate, which is essential for the burgers to hold their shape and have a meaty texture. The mixture should be quite sticky and hold together well when you're ready to form the patties.
Form the Patties: Using a burger mould form the mixture into patties that are about 150g (just over 5 oz) each. If you don't have a burger mould, you can use a cookie cutter or simply shape them by hand.
Fry the Patties: Heat a non-stick pan over a low heat. Once the pan is hot, carefully place the patties in the pan. Cook for about 8-10 minutes on the first side, then flip and cook for another 5-7 minutes, or until the burgers are golden brown and cooked through.
Serve: Serve the burgers on buns with your favourite toppings, such as lettuce, tomato, pickles, vegan cheese, mayo, and ketchup.