In a large soup pot or Dutch oven, sauté garlic and ginger in avocado oil for 2-3 minutes just until fragrant
Add water, miso, soy sauce and mushrooms and bring to the boil.
Turn heat to simmer then add the noodles and carrot. Cook for another 2-3 minutes just until the buckwheat noodles soften. Remove from heat.
Stir in spinach and transfer to two large soup bowls, add your toppings of choice and serve!