In a small stockpot, heat the olive oil and sauté the onion for 2 minutes. Add the carrots, celery, ginger, and garlic and sauté until tender, approximately 10 minutes.
Add the mirin and continue cooking until almost evaporated. Add the vegetable stock and cook for 15 minutes.
Purée in a blender.
Strain back into the stockpot through a fine sieve. Add the Earth Balance and stir until melted. Remove from the heat. Stir in the vinegar.
Store in an airtight container for up to 1 week.
Servings: 1 cup