Sweet potato thai soup

The mind blowing game changer

Before the world pandemic hit, I was lucky enough to visit one of my investors on his private yacht in Ibiza and I was served an amazing thai style rice dish with thinly sliced kafir lime leaves. This was a mind blowing game changer for me, since I have always just put the leaves in whole and let them steep and then removed them before serving. But OMG, seriously WOW. The flavor explosion of the lime leaves was insane, it was the taste that I had tried so many times to get, but I could never crack the code to it. So simple, when you know.

So todays recipe is a cudo to his chef, for giving me that experience.

This soup is so easy to make, even if you can't be asked to make the toppings and fish - just make gallons of this, and top with whatever you like - you will thank yourself for it on the days when you don't wanna cook.

I should add, here, that if you can't get Kafir lime leaves, don't give up. You can add finely grated lime zest to the soup in the final stages of blending, to give it that citrus feel.

Sweet potato thai soup

Yield: 3-4 serving

Prep time: 12 min

Cooking time: 1 hour in the oven + 10 minutes for the garnish

Soup Ingredients:

  • 500 g sweet potato, skin on

  • 1 large onion, Sliced

  • 2 cloves garlic, sliced

  • 1/2 tbsp sliced fresh ginger

  • 4 kafir lime leaves thinly sliced (optional - but AMAZING if you can get it at your local asian supermarket, they come frozen at my local shop)

  • 150-200 ml of bouillon water (depending on the thickness you would like to have)

  • 200 ml coconut milk

  • 1/2 tsp. salt

  • lime or lemon


  • 1 red pepper, halved and sliced into bite sized pieces.

  • 1 large red onion, sliced

  • 1 handful of thai basil or coriander (or both)

  • 300 g of filleted fish cut into 2,5x2,5 cm/ 1 x 1 inch pieces. NOTE: I used redfish

Step 1.

Pre-heat the oven to 200*c/395*F

Place the sweet potatoes with the skin on a baking tray lined with baking paper.

Depending on the size of the sweet potatoes, bake for about 35-50 minutes until they are completely tender.

Step 2. (whilst the sweet potatoes are baking)

Prepare the ingredients as shown in the ingredient list.

Step 3.

The soup:

Heat up a pan/skillet to medium heat, with 1 tbsp of oil and caramelize the sliced onion, garlic, ginger with a pinch of salt for about 6-7 minutes. Add the kafir lime leaves and saute for another minute. Transfer to a bowl and wipe of the pan.

Step 4.

Get your blender out.

Step 5.

When the potatoes are tender, take them out of the oven and either:

a) let them cool a bit before you open the sweet potato skins and squeeze the soft flesh out into the blender.


b) suck it up and open the sweet potato skins, even though they are seriously burning hot, because you have very little patience and squeeze the soft flesh out also into the blender. (this was my method)

Step 6.

Bring the bouillon water to a boil. I used half a vegetable bouillon cube.

Step 7.

Add the caramelized onions, and bouillon water to the blender and blend until smooth.

If you let your sweet potatoes cool down, the transfer the soup to a casserole and gently heat it up.

Step 8.

Add the coconut milk and combine well, then season with salt and lime or lemon juice.

Step 9.

The toppings:

Heat up the pan/skillet again to medium heat, with 1 tbsp of oil and sauté the toppings, sliced onion and red pepper for about 2 minutes, place your fish dice on top of the veggies, season with salt and cover the pan with a lid. Cook for about 3-4 minutes until the fish is fully steamed. (it's ready when the flesh falls apart, when poked seriously)

Step 10.

Pour the soup into a deep plate or a bowl, carefully place a large spoon full of steamed vegetable and fish in the middle. Top with fresh herbs and serve.


You can easily pre bake the sweet potatoes the day before or

if you have a lot of sweet potatoes hanging around the house, then bake them and squeeze the flesh out into a bag and keep it in the fridge or freeze it.

Then you have soup much faster next time, if you're not making a large portion to begin with.

Thank you for reading and cooking.

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Take care, lot's of love

- Hannah

Check out the fish burger recipe


copyright Hannah Grant 2021