Add some cooking fat to a large saucepan placed over a medium heat.
Cooking fat
Add the onions and cook for 2 minutes.
1 medium yellow onion
Add the ginger, garlic, and curry paste to the saucepan, and cook for another 2 minutes.
1 tbsp. red curry paste, 1 tablespoon freshly grated ginger, 3 cloves garlic
Add the sweet potatoes, carrots, and chicken stock.
1 large sweet potato, 1½ pounds carrots, 1 quart chicken stock
Bring everything to a boil then cover and reduce to a simmer.
Let the soup simmer for 20 minutes, until all the vegetables are tender.
Puree the soup until smooth using an immersion blender or food processor.
Stir in the coconut milk, the fish sauce, and season with salt and pepper to taste.
1 can coconut milk, 1 tbsp. fish sauce, Sea salt and freshly ground black pepper
Serve garnished with lime wedges and roasted almonds.
1 lime, 1 cup roasted almonds