01 - Heat olive oil in a large pot over medium heat. Add onion and sauté for 3 minutes until translucent.
02 - Add garlic and ginger; cook for 1 minute until fragrant.
03 - Stir in sliced carrots and diced potato. Sauté for 5 minutes, stirring occasionally.
04 - Pour in vegetable broth. Bring to a boil, then reduce heat and simmer, covered, for 20-25 minutes until carrots are very tender.
05 - Remove pot from heat. Let cool slightly, then blend soup using an immersion blender or countertop blender until completely smooth.
06 - Whisk miso paste with a ladle of hot soup until dissolved. Stir mixture back into the pot along with soy sauce and sriracha.
07 - Return to low heat and gently warm through; do not boil after adding miso.
08 - Stir in lime juice. Taste and adjust seasoning or spice as desired. Ladle into bowls and garnish with coriander, spring onions, and sesame seeds.