In a frying pan over medium heat, heat about 2 tablespoons oil. Add dried fish and lightly fry, turning once or twice as needed. Remove from pan and drain on paper towels. Set aside.
In a wide pan over medium heat, heat about 1 tablespoon oil. Add onions, garlic, and cook until softened.
Add jackfruit and cook, stirring occasionally, for about 2 to 3 minutes.
Add fish sauce and cook for about 1 to 2 minutes.
Add coconut milk and chili peppers. Bring to a simmer.
Continue to cook for about 10 minutes or until vegetable is tender.
Add coconut cream and stir to combine. Continue to cook for about 5 to 8 minutes or until liquid is thickened and reduced.
Add dried fish.
Season with salt and pepper to taste. Serve hot.
Notes
If you're using fresh jackfruit, add one cup of water and cook the vegetable about 4 to 5 minutes longer.