Pumpkin Soup Recipe

Prepare aromatics

Heat a large heavy-bottomed pot over medium heat. Add the neutral oil (2 tbs). When shimmering, add the diced onion and a pinch of salt. Sauté for 4–5 minutes until translucent. Add the minced garlic and minced ginger and sauté 1–2 minutes until fragrant, taking care not to burn the garlic.

Add vegetables and lemongrass

Add the cubed pumpkin and chopped carrot to the pot. Toss to coat with the aromatics and oil. Add the bruised lemongrass stalks (tie them with kitchen twine or keep whole for easy removal). Sauté everything for 3–4 minutes to develop slight color and flavor.

Simmer

Pour in the stock (1 L) so it just covers the vegetables. Bring to a gentle boil, then reduce to a simmer. Cover and simmer for 18–22 minutes, or until the pumpkin and carrot are very tender when pierced with a fork.

Remove lemongrass and blend

Remove the pot from heat. Fish out and discard the lemongrass stalks. Using an immersion blender, purée the soup directly in the pot until smooth and silky. Alternatively, cool slightly and purée in batches in a countertop blender, then return to the pot.

Incorporate coconut milk

Stir in the full-fat coconut milk (400 ml) and, if using, the ginger juice (1 tsp). Rewarm gently over low heat; do not boil vigorously once coconut milk is added to avoid separation.

Season and balance

Taste the soup and add the fish sauce or soy sauce (1 tbs) for umami, brown sugar (1 tsp) to balance acidity, lime juice (2 tbs) for brightness, sea salt (1.5 tsp overall, adjusting to taste), and freshly ground black pepper (1/2 tsp). Stir and simmer gently 2–3 minutes to allow the flavors to meld. Adjust lime, salt, or sugar as needed.

Optional flavor boost

If you want extra lemon grass essence, stir in 1 tsp of lemongrass oil (or a few drops) at the end for concentrated aroma. If you prefer more ginger heat, add the optional 1 tsp ginger juice now, tasting as you go.

Serve

Ladle the soup into warm bowls. Swirl a little reserved coconut milk (50 ml) on top for a creamy finish and visual contrast.

Garnish

Finish each bowl with chopped cilantro (2 tbs), a sprinkle of crispy shallots or roasted pumpkin seeds (2 tbs), and thin slices of red chili if using. Grind a touch more black pepper to taste.

Notes on texture and storage

If the soup is too thick, thin with up to 100 ml additional stock or water. Refrigerate leftovers in an airtight container for up to 3 days; reheat gently. The soup can be frozen for up to 2 months—thaw and reheat slowly, stirring in a splash of coconut milk or stock if it has separated.