Preheat oven to 325F (or 300F if your oven runs hot like mine does)
In a large bowl, combine gluten, white pepper, onion powder, garlic powder, rosemary and thyme and stir to combine.
In another bowl, combine water, mushroom broth powder, tamari, marmite, worchestershire sauce, blackstrap molasses and oil and stir to combine.
Add wet ingredients to the dry mixture and stir until a wet dough forms.
Turn onto a clean surface and knead aggressively (I basically punched it multiple times) for about 5-10 minutes until it stretches before it tears apart.
Roll the dough into a log, tucking in the edges as best as you can. Try to shape it so it will fit inside your simmering pot. Place on a lined, thick-bottomed baking sheet, seam down. Bake for 45-50 minutes until bottom is golden.