01 - Heat olive oil in a large pot over medium heat. Add chopped onion and sauté for 3 minutes until translucent and softened.
02 - Stir in minced garlic and grated ginger. Cook for 1 minute until fragrant, being careful not to burn the garlic.
03 - Add sliced carrots and diced potato to the pot. Sauté for 5 minutes, stirring occasionally to coat with aromatics.
04 - Pour in vegetable broth and bring to a boil. Reduce heat to low, cover, and simmer for 20-25 minutes until carrots are completely tender when pierced with a fork.
05 - Remove pot from heat and let cool slightly. Blend using an immersion blender until completely smooth and creamy, or blend in batches using a countertop blender.
06 - Whisk miso paste with a ladle of hot soup in a small bowl until fully dissolved. Stir mixture back into the pot along with soy sauce and sriracha.
07 - Return soup to low heat and warm through gently. Do not boil after adding miso to preserve its beneficial enzymes and flavor.
08 - Stir in lime juice and taste. Adjust seasoning or spice level as desired. Ladle into bowls and garnish with cilantro, green onions, and sesame seeds.