1With a wet paper towel; wipe away any dirt from the mushroom caps and stems. Place mushrooms in a large stockpot.
2Add in the remaining ingredients to the pot. The liquid will not cover the mushrooms at first. Cook, covered, over very low heat for 4 hours; stirring occasionally so that the mushrooms are completely coated with cooking liquid.
3Remove the cover and cook for an additional 4 hours. The mushrooms will shrink by half and become saturated with cooking liquid. Remove with a slotted spoon and serve in a bowl.