In a soup pot, sauté the onion for 3 minutes until soft.
Add the garlic and cook another minute.
Chop the mushrooms, add to the pot and cook about 3 more minutes.
Add the white wine, vegetable broth, and herbs, cover and bring to a simmer.
Drain the cashews and add to a blender with 1/2 cup water. Blend until creamy.
Whisk the cashew cream into the pot. Simmer another 20 minutes to develop flavors.
Add salt to taste.