Sweet Potato and Lemongrass Soup

Total Time
Prep 10 mins
Cook 20 mins

I found this recipe online in an article about a Philadelphia restaurant and tried it out at home. I wasn't overawed by it, but love the flavors, so I decided to play around with it a bit. By the third batch I had hit gold.

Ingredients Nutrition

  • 3 tablespoons olive oil
  • 1 large onion, diced
  • 2 inches piece gingerroot, peeled and minced, I freeze my gingeroot and then grate it on a Microplane, it's the best
  • 1 jalapeno pepper, deseeded and minced
  • 4 garlic cloves, minced (I just smash it with the broad side of a knife)
  • 3 lbs sweet potatoes, peeled and cut into 1/2 inch slices
  • 6 cups water (this makes a thick soup, use 7 cups if you like it thinner)
  • 10 stalks lemongrass, outer dry leaves removed and bulblike base crushed (again, the broad side of a knife works wonderfully here)
  • 7 ounces coconut milk
  • salt & freshly ground black pepper


  1. In large, heavy soup pot, heat the oil medium-hot and saute the onion until translucent, about 5 minutes.
  2. Add the ginger, jalapeno and garlic and saute 2 minutes more.
  3. Add the sweet potato and water. It should be just enough water to cover the sweet potatoes.
  4. Tie the lemongrass stalks together with string and put the bulb/base ends into the soup.
  5. Bring the liquid to a boil, reduce heat and let simmer until the potatoes break apart, about 15 minutes. Remove from heat.
  6. Discard the lemongrass stalks. P.
  7. uree the soup -- I use an immersion blender right in the pot, or you could do this in batches in the food processor or blender.
  8. Strain the soup through a fine sieve (I didn't even bother with this step).
  9. Stir in the coconut milk. Season with salt and pepper.
Most Helpful

This soup is super easy to make, and delicious! By substituting lite coconut milk, using only 1 T of oil, and adding additional garlic, the total calories and fat per serving can be reduced without losing any flavor.

Lanamaries March 17, 2013

Oh... this is DELICIOUS! I pretty much followed the recipe and it turned out great but wish I had used just a tiny bit less water. I'm a big fan of lemongrass, ginger and sweet potatoes so to have those blend together, it's just the perfect recipe for me and my family! Thank you so much for sharing it.

Super Nana September 29, 2010

This was very good and smooth. I actually made it with white sweet potatoes (oops) but it turned out very pretty and creamy. Everyone thought it tasted like a top-star restaurant recipe! Good one.

JMRzaar March 11, 2009