Khao Piak Sen - Rice Noodle Soup Recipe

Ever craved a bowl of comforting chicken noodle soup, but wished for something a little... different? Something with an incredible depth of flavor and a uniquely satisfying texture? Get ready to discover Khao Piak Sen, the beloved Lao chicken rice noodle soup that’s about to become your new obsession. This isn't your grandma's classic; it’s a whole new level of cozy, featuring incredibly soft and chewy homemade noodles that practically melt in your mouth, all swimming in a naturally thickened, savory broth.
What makes Khao Piak Sen truly stand out is its signature chewiness – those slippery, hand-cut noodles are made from scratch, giving them an unparalleled texture you won't find in a packet. Plus, the rich, flavorful broth thickens ever so slightly as the noodles cook, creating a velvety consistency that clings to every strand. It’s hearty, warming, and utterly delicious.
Here, we're not just giving you a recipe; we're guiding you through the art of making this incredible rice noodle soup from the ground up. You’ll learn how to craft a deeply flavorful chicken broth, mix and roll your own perfectly chewy noodles, and master the tricks to keep them from breaking. Whether you're a beginner cook looking for a fun challenge or an experienced home chef eager to explore new flavors, this guide will have you making the best Khao Piak Sen in no time!

Ingredients

• For the chicken broth
• 1 whole chicken (about 3-4 lbs), cut into pieces, or 3-4 lbs bone-in chicken pieces (thighs, drumsticks, wings). A whole chicken gives the best flavor and gelatin for a rich broth, but bone-in pieces work great too.
• 1 large onion, quartered
• 3-4 inches fresh ginger, sliced into thick rounds
• 6-8 cloves garlic, smashed
• 2 tablespoons fish sauce (or more, to taste)
• 1 teaspoon salt (or more, to taste)
• ½ teaspoon sugar
• 10-12 cups cold water
• Optional add-ins: 2-3 stalks lemongrass, bruised; 3-4 makrut lime leaves, torn
• For the noodles
• 1 cup regular rice flour (not glutinous rice flour)
• ½ cup tapioca starch (also called tapioca flour)
• ¾ cup boiling water
• ¼ cup tapioca starch or rice flour, for dusting
• For serving (toppings)
• Sliced scallions
• Fresh cilantro, chopped
• Lime wedges
• Chili oil or chili flakes (for a spicy kick)
• Fried garlic (store-bought is perfectly fine!)
• Optional greens: A handful of water spinach (if you can find it!), baby spinach, or chopped bok choy

Directions

1. Make the chicken broth (from scratch)
2. Sauté or lightly char aromatics (optional but worth it!): In your large pot, you can dry-sauté the onion, ginger, and garlic over medium-high heat until lightly browned and fragrant. This step adds a beautiful depth of flavor. If using, lightly bruise the lemongrass stalks and tear the makrut lime leaves.
3. Add chicken + water; simmer gently: Place the chicken pieces into the pot with the browned aromatics (if using). Add 10-12 cups of cold water, ensuring the chicken is mostly submerged. Bring to a gentle boil, then immediately reduce the heat to a low simmer.
4. Skim foam: As the broth simmers, foam and impurities will rise to the surface. Use a spoon or a fine-mesh skimmer to regularly remove this foam. This helps keep your broth clear and clean-tasting. Continue simmering for 1.5-2 hours, or until the chicken is very tender.
5. Pull chicken when tender; shred: Once the chicken is cooked through and easily falls off the bone, carefully remove it from the pot. Let it cool slightly, then shred the meat from the bones, discarding the skin and bones. Set the shredded chicken aside.
6. Strain broth; season to taste: Carefully strain the broth through a fine-mesh strainer into a clean pot or bowl, discarding the cooked aromatics. Return the strained broth to the pot. Stir in the fish sauce, salt, and sugar. Taste and adjust seasonings as needed – it should be savory and well-balanced. Keep the broth warm over low heat.
7. Make the noodle dough (with checkpoints)
8. Mix flours: In a large mixing bowl, combine the rice flour and tapioca starch. Whisk them together thoroughly.
9. Add boiling water in stages: Carefully pour about half of the boiling water into the flour mixture. Stir with a wooden spoon or sturdy spatula until a shaggy dough forms. Gradually add more boiling water, a tablespoon at a time, mixing until the dough starts to come together. You might not need all the water.
10. Dough feel checkpoints:
    1. After mixing: The dough should look shaggy and crumbly, but when you press it together, it should hold.
    2. After kneading: Once cool enough to handle, turn the dough out onto a lightly floured surface (using tapioca starch or rice flour). Knead for 5-7 minutes until it becomes supple, smooth, and elastic, and is no longer sticky. It should feel soft and pliable, like Play-Doh. If using a stand mixer with a dough hook, knead for 3-5 minutes.
11. Rest time: Cover the dough with a damp cloth or plastic wrap and let it rest for 10-15 minutes. This helps the gluten relax, making it easier to roll.
12. Roll and cut noodles
13. Roll thickness target: Divide the dough into 2-3 manageable portions. On a lightly dusted surface (use tapioca starch or rice flour), roll out one portion of dough using a rolling pin until it's about 1/8 inch thick. Aim for an even thickness across the sheet.
14. Cut width target: Using a pizza cutter or a sharp knife, cut the dough into strips about 1/4 inch wide and 4-6 inches long.
15. Dusting + preventing sticking: As you cut, gently toss the noodles with a bit more dusting starch to prevent them from sticking together.
16. Keep covered: Place the cut noodles on a tray and keep them covered with a damp cloth or plastic wrap while you roll and cut the remaining dough. This prevents them from drying out.
17. Cook noodles in the broth (and get the right thickness)
18. Bring broth to a gentle boil: Bring the strained, seasoned chicken broth back to a gentle boil over medium heat.
19. Add noodles in batches; minimal stirring: Carefully add the fresh noodles to the simmering broth in 2-3 batches to prevent them from clumping and to maintain the broth's temperature. Stir very gently and minimally at first to separate them.
20. When they float + turn translucent → done: Cook the noodles for 2-4 minutes, or until they float to the surface and become translucent and perfectly chewy.
21. If broth gets too thick: As the noodles cook, the tapioca starch will naturally thicken the broth. If it becomes too thick for your liking, simply add a splash of hot water or more chicken stock, a little at a time, until you reach your desired consistency.
22. Build the bowls
23. Noodles first: Ladle a generous portion of freshly cooked noodles into individual serving bowls.
24. Chicken: Top the noodles with some of the shredded chicken.
25. Ladle broth: Ladle plenty of the hot, thickened broth over the noodles and chicken.
26. Add toppings (quick “choose 2–3” guidance): Garnish with your choice of fresh toppings – we recommend choosing 2-3 for a balanced flavor. A sprinkle of scallions, cilantro, a squeeze of lime, and a drizzle of chili oil are classic and delicious!