Ingredients Clean the portobello mushrooms and cut them into pieces. Cut the tomatoes into large pieces. Heat the oil over medium-high heat, then add the bay leaves, garlic, and ginger. Cook for 3 minutes or until the garlic starts to turn brown, then add the portobellos. Cook for 6 minutes, then add the cilantro, peppercorns, and salt. Cook for 3 minutes, then add the tomatoes; cook for 2 minutes.