Marinate the chicken with chopped onion and garlic, fish sauce, turmeric powder, and sugar for 15 minutes. Sauté onion and garlic until fragrant (for authentic flavor, use shallots and peanut oil if available). Add the chicken and stir-fry until it firms up, then add water, fish sauce, chicken bouillon, and turmeric powder.

Blanch the noodles in boiling water. Peel the roasted peanuts.

Place the noodles in a bowl, top with chicken and broth, add peanuts and ground black pepper. Serve with fresh herbs, bean sprouts, and chili jam on the side.