Urban Fresh Farms Wairarapa-grown oyster mushrooms are a core ingredient in their Magic Dust oyster mushroom seasoning and pure mushroom powder. Add to soups, broths, casseroles and sauces, mix into butter or sprinkle on meat for barbecuing. Mushrooms are a great source of protein, trace elements and vitamins. Magic Dust contains pure oyster mushroom powder, salt, pepper, rosemary and a hint of chilli in a 50g glass jar. 100% pure mushroom powder comes in a 20g glass jar.