Mushroom-Soup Milkshake

Ingredients

• 10 cups cremini mushrooms (quartered)
• 1 red onion (coarsely chopped)
• 3 tbsp olive oil
• 2 celery stalks (coarsely chopped)
• 2 garlic cloves (chopped)
• 4 cups vegetable broth
• 1 potato (peeled and cubed)
• 1 tbsp balsamic vinegar
• 1 tbsp low-sodium soy sauce
• 1/4 tsp freshly ground pepper
• 2/3 cup whipping cream
• 6 cherry tomatoes