Combine carrots, water, salt, and onion in a medium saucepan. Cook over medium heat until carrots are tender, about 15 min.
Scoop carrots and onion out of cooking water; place in a blender or food processor.
Add tofu, dill, miso, white pepper, and a small amount of cooking water; puree.
Return puree to cooking water, mix wiell and serve immediately.
Makes 4-6 servings.
Per serving: 129 Cal / 16g Prot / 2g Fat / 21g Carb / 0 Chol / 730mg Sod / 4g Fiber.