There's something really satisfying about the combination of sweet corn, pumpkin and sweet-salty crab, even if the crab is imitation! In this recipe its best to use the kind of imitation crab that is formed into long "legs" and is individually wrapped. Don't cook too long or the "crab" tends to fall apart.
In a soup pot, melt butter and gently cook minced ginger for about 3 minutes. Add frozen corn, milk, coconut milk, stock, and pumpkin and bring to a boil, then simmer for 8 to 10 minutes or until pumpkin is soft. Stir in the potato flakes to thicken the broth, add the imitation crab, then season with salt and pepper. Divide soup into four bowls, sprinkle with green onion and serve immediately.