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Pla Som Recipe (Thai Sour Fish)

Whole Thai pla som fish deep-fried until golden, garnished with red chili, shallots, lime, and coriander on a green banana leaf.
Make authentic Thai sour fish with this pla som recipe, featuring fermented and fried fish, with simple image instructions for perfect results.
Praew
Prep Time 20 minutes
Cook Time 20 minutes
Total Time 40 minutes
Cuisine Thai
Course Main Course
Serving Size 4 people

Ingredients

  • 500 g whole fish, see notes
  • 80 g salt, for cleaning fish
  • 2 heads garlic
  • 3 g MSG
  • 6 g white sugar
  • 6 g salt
  • 200 g uncooked glutinous rice
  • 700 ml water
  • oil, as needed for deep-frying
  • 2 large eggs
  • 60 g tempura flour

Instructions

Making sticky rice

  • Start by rinsing your glutinous rice, then soak it in water for at least 4 hours. After soaking, steam the rice until tender. Remember to save the soaking water – you’ll need this ‘sticky rice water’ later. For more details, check out my full Thai sticky rice recipe.

Cleaning fish

  • Use a dull knife to scrape off the scales from tail to head. Next, make a shallow cut along the belly from under the head to the tail, remove the innards, and thoroughly rinse the cavity under cold water. Finally, pat the fish dry inside and out.

Curing fish

  • Start by scoring cuts on both sides of the fish, then rub salt generously into the cuts and over the entire surface to season and draw out moisture. Allow it to rest for 2 hours. After resting, wash the fish thoroughly to remove all salt. Finally, immerse the fish in the preserved ‘sticky rice water’ for 1 hour to enhance its flavor.

Fermenting fish

  • Crush garlic with a mortar and pestle until finely crushed. Next, mix the garlic with your cooked sticky rice, white sugar, MSG, and salt in a bowl. Apply this mixture liberally over the previously cured fish, ensuring it fills the cuts and covers the surface. Place the fish in a container, cover, and set aside for 3 days at room temperature.

Frying fermented fish

  • For frying the fermented fish, start by coating the fish evenly with tempura flour, ensuring both sides are well covered. Next, dip the floured fish into beaten eggs until it is fully coated. Heat oil in a frying pan over medium heat. Once hot, gently place the egg-coated fish in the oil and fry until it’s golden brown and crispy on both sides. Serve immediately with rice. Enjoy!

Notes

  • Use the nutrition card in this recipe as a guideline.
  • Fish – In my village in Isan, we typically make som pla with java barb because it has soft fish bones. You can also use other white flesh fish, like tilapia and halibut, which have a mild flavor and firm texture ideal for fermentation.
Calories: 417kcal | Carbohydrates: 39g | Protein: 53g | Fat: 5g | Saturated Fat: 2g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 1g | Cholesterol: 125mg | Sodium: 9735mg | Potassium: 793mg | Fiber: 1g | Sugar: 1g | Calcium: 41mg | Iron: 2mg
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