How Fresh Rice Noodles Are Made: A Visual Guide to Thai Rice Noodles

Fresh rice noodles are made from a simple batter of rice flour and water that is steamed into thin, tender sheets and then cut into ribbons. In Thai cooking, this process takes two main forms: fresh flat rice noodles (similar to the wide noodles in pad see ew or the thin noodles in pad thai) and fermented rice noodles known as khanom jeen, which have a slightly tangy flavor and a soft, round shape. Both start with rice, but fermentation and shaping create very different results.

What Are Fresh Rice Noodles?

Fresh rice noodles are soft, slippery ribbons made from rice flour and water. They have a delicate, slightly chewy texture and a mild, neutral flavor that soaks up sauces beautifully. Unlike dried rice noodles, which are brittle and need soaking, fresh rice noodles are already tender and ready to stir-fry or add to soups. In Thai markets, they are sold as folded sheets or pre-cut noodles, often dusted with a little oil or rice flour to prevent sticking. Their color is opaque white, and they feel smooth and cool to the touch.

What Are Thai Fermented Rice Noodles (Khanom Jeen)?

Khanom jeen are fresh rice noodles made from fermented rice. The fermentation gives them a subtle sourness and a slightly springy, almost gel-like texture. They are shaped into thin, round strands—like very fine spaghetti—and are traditionally served at room temperature with rich, curry-like sauces and fresh vegetables. Unlike flat rice noodles, khanom jeen are never stir-fried; they are meant to be topped with sauce. Their aroma is faintly yeasty, and their color is pure white.

Key Ingredients and Tools

Making fresh rice noodles at home requires only a few ingredients, but the right tools make the process much easier. Here is what you need:

• Rice flour: The foundation of fresh rice noodles. Look for flour made specifically from long-grain rice; it produces a tender noodle that holds its shape. Glutinous rice flour is not a substitute—it makes sticky, mochi-like noodles.
• Water: Used to make the batter. The ratio of rice flour to water affects the noodle's thickness and tenderness.
• Optional tapioca starch or cornstarch: A small amount can improve the noodle's elasticity and make it less likely to break.
• Steaming setup: A wide, shallow pan (like a round cake pan or a dedicated noodle steamer) placed inside a steamer or over a pot of boiling water. The pan must be perfectly level so the batter forms an even sheet.
• A thin, flexible spatula or dough scraper: To loosen the steamed noodle sheet from the pan without tearing.
• A sharp knife or pizza cutter: For cutting the sheets into ribbons of your desired width.
• Oil: A neutral oil like vegetable or rice bran oil, lightly brushed on the pan and on the finished noodles to prevent sticking.

How Fresh Rice Noodles Are Made Step by Step

This method produces the flat rice noodles used in dishes like pad see ew, pad thai, and Thai noodle soups. The process is straightforward but requires a little practice to get the thickness right.

1. Make the batter: Whisk together rice flour, water, and a pinch of salt until completely smooth. A typical ratio is 1 cup rice flour to 1 1/4 cups water, but this can vary. Let the batter rest for 15–30 minutes to hydrate the flour fully.
2. Prepare the steamer: Bring water to a boil in a steamer or wok with a steaming rack. Lightly oil a shallow, heatproof pan (about 8–10 inches in diameter) with a neutral oil.
3. Steam a thin sheet: Pour a small ladleful of batter into the oiled pan—just enough to coat the bottom in a thin, even layer (usually 2–3 tablespoons for an 8-inch pan). Tilt the pan to spread the batter evenly.
4. Steam until set: Place the pan in the steamer, cover, and steam for 2–4 minutes. The noodle sheet is done when it turns from opaque white to slightly translucent and the surface is no longer wet. It will look like a smooth, shiny pancake.
5. Cool slightly and remove: Carefully take the pan out of the steamer. Let it cool for about 30 seconds, then run a thin spatula around the edges and gently peel the noodle sheet out. Place it on a lightly oiled surface.
6. Repeat: Re-oil the pan, stir the batter, and steam the next sheet. Stack the finished sheets with a little oil or parchment paper between them to prevent sticking.
7. Cut into noodles: Once you have several sheets, fold or roll them loosely and use a sharp knife to cut them into ribbons. For pad see ew, cut into wide strips about 1 inch wide; for pad thai, cut into thin strips about 1/4 inch wide.

Fresh rice noodles are best used the same day. If you must store them, keep them in an airtight container in the refrigerator for up to 2 days. They will firm up slightly; refresh them by dipping briefly in hot water before using.

How Thai Fermented Rice Noodles (Khanom Jeen) Are Made

Khanom jeen takes the basic rice noodle process and adds a fermentation step that gives the noodles their signature tang. Here is how it is done:

1. Soak and ferment the rice: Long-grain rice is soaked in water for several days (usually 2–4 days) until it ferments. The water becomes slightly bubbly and develops a mild sour smell. This fermentation breaks down some of the rice's starches, giving the noodles a softer texture and a subtle tang.
2. Wet grinding: The fermented rice is drained and ground with water into a smooth, thick batter using a stone grinder or a high-powered blender. Traditional methods use a stone mill to achieve a very fine texture. This process is called wet grinding because the rice is ground while wet, unlike dry rice flour.
3. Cook the batter: The batter is cooked over low heat, stirring constantly, until it thickens into a dough-like paste. Some recipes call for cooking only a portion of the batter and then mixing it back into the raw batter to create a smooth, pipeable consistency.
4. Shape the noodles: The warm dough is pressed through a khanom jeen press—a metal cylinder with small holes at the bottom—directly into boiling water. As the dough emerges, it forms thin, round strands that cook instantly. Alternatively, the dough can be piped through a pastry bag with a small round tip.
5. Rinse and cool: The cooked noodles are scooped out of the boiling water and rinsed in cold water to stop the cooking and remove excess starch. They are then drained and arranged in loose coils or small bundles.

Khanom jeen is typically eaten at room temperature, not hot. Its mild sourness pairs beautifully with rich coconut milk curries, such as nam ya (a fish-based curry) or green curry, and with fresh herbs and vegetables.

Fresh vs. Fermented Rice Noodles: A Quick Comparison

Tips for Success and Substitutions

• Level the pan: For even noodle sheets, the steaming pan must be perfectly level. If your steamer rack is wobbly, place a folded kitchen towel under the pan to stabilize it.
• Get the thickness right: Too much batter makes thick, doughy noodles; too little makes fragile sheets that tear. Aim for about 1/16 inch thick.
• Prevent sticking: Oil the pan lightly before each sheet, and brush a little oil between stacked sheets. If you plan to stir-fry the noodles, use less oil and keep them separated.
• Substituting dried rice noodles: If you cannot find fresh rice noodles, dried flat rice noodles are widely available. Soak them in warm water until pliable (about 20–30 minutes), then drain and use as you would fresh. However, dried noodles lack the tender, fresh-made quality and may need a slightly longer stir-fry time. For khanom jeen, dried rice vermicelli can be substituted, but it will not have the fermented tang.
• Storing fresh rice noodles: They are best used immediately. If storing, keep them in an airtight container in the fridge for up to 2 days. To revive, dip in hot water for a few seconds.

Making fresh rice noodles at home is a rewarding way to experience the true taste and texture of Thai noodle dishes. Whether you steam flat sheets for a smoky pad see ew or ferment rice for tangy khanom jeen, the process connects you to centuries of Thai culinary tradition.