01 - Heat olive oil in a large pot over medium heat. Add diced onion and sauté for 3 to 4 minutes until translucent and softened.
02 - Add minced garlic and grated ginger to the pot. Cook for 1 minute, stirring constantly, until fragrant.
03 - Stir in sliced carrots and cook for 2 to 3 minutes, allowing them to lightly caramelize and absorb the aromatics.
04 - Pour in vegetable broth and water. Bring to a boil, then reduce heat to low and simmer for 15 to 20 minutes until carrots are fork-tender.
05 - Remove the pot from heat. Use an immersion blender or carefully transfer the soup to a countertop blender in batches. Blend until completely smooth and silky.
06 - Return the soup to the pot if needed. Whisk in miso paste and soy sauce until fully dissolved. Gently warm over low heat without boiling to preserve the miso's live cultures and delicate flavor.
07 - Taste the soup and adjust with salt and freshly ground black pepper as desired.
08 - Ladle into warm bowls. Garnish with chopped scallions, toasted sesame seeds, and a light drizzle of sesame oil if desired.