01 - Heat olive oil in a large pot over medium heat. Add diced onions and cook for 3-4 minutes until translucent and softened.
02 - Add minced garlic and grated ginger to the pot. Sauté for 1 minute until fragrant, stirring constantly to prevent burning.
03 - Stir in the sliced carrots and cook for 2 minutes, allowing them to lightly coat in the aromatics and begin releasing their natural sweetness.
04 - Pour in the vegetable broth and bring to a rolling boil. Reduce heat to low, cover partially, and simmer for 18-20 minutes until carrots are fork-tender and easily pierced.
05 - Remove the pot from heat. Using an immersion blender, purée the soup directly in the pot until completely smooth and velvety. Alternatively, blend in batches using a standard blender, venting the lid to allow steam to escape.
06 - In a small bowl, dissolve the white miso paste with a ladleful of hot soup broth. Stir this mixture back into the pot along with the soy sauce. Season with salt and pepper to taste.
07 - Warm the soup gently over low heat if needed. Avoid bringing to a boil after adding miso, as high heat diminishes its delicate flavor and beneficial probiotic properties.
08 - Ladle the soup into serving bowls. Finish with thinly sliced scallions and a sprinkle of toasted sesame seeds. Serve immediately.