Sichuan Jelly Noodles (Liang Fen)

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The Most Refreshing Thing I Ate in Chengdu

I was in Chengdu, wandering through a market on a sweltering summer afternoon, when I spotted a vendor cutting something translucent and wobbly into thick, slippery strips and tossing them in a sauce the color of deep crimson. I joined the line without asking questions.

What arrived in my hand was a small bowl of the most refreshing thing I had eaten in days. The noodles were silky and slippery in a way that no wheat or rice noodle ever is, almost frictionless, sliding around the bowl and coating themselves in the chili sauce as I mixed them. The sauce was fiery and numbing from the Sichuan peppercorn, sharp and funky from the black vinegar, savory from the soy. The peanuts added crunch. The scallions added freshness.

It was the perfect snack on a hot summer day. Simple, cold, aggressively flavored, and gone in about two minutes.

I have been making it at home ever since.

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What Is Liang Fen?

Liang Fen (凉粉) translates literally to “cold starch” and is exactly what it sounds like. A gelatinized starch made from mung beans, pea starch, or sweet potato starch that sets into a firm, slippery jelly and is served cold with a sauce. It is one of the oldest street foods in Chinese cuisine, with roots going back over a thousand years, and remains one of the most beloved summer snacks across Sichuan and broader China to this day.

The Sichuan version Suan La Liang Fen (酸辣凉粉), or sour and spicy cold jelly, is the most aggressively flavored of the regional variations. The sauce built on Sichuan chili flakes, peppercorn powder, black vinegar, and soy sauce hits every register at once: spicy, numbing, sour, savory. It is designed to be eaten cold on a hot day and it does that job better than almost anything else.

What makes liang fen so interesting from a food science perspective is the complete absence of anything other than starch and water. Two ingredients, combined in the right ratio, cooked and cooled, produce a firm, translucent jelly with a texture unlike any other food. It is not quite tofu, not quite gelatin, not quite anything you can compare it to directly. You have to taste it to understand it.

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Why It Works as a Summer Dish

Cold, slippery, and requiring zero reheating to serve, liang fen is built for hot weather in a way that feels almost engineered. The jelly itself has no flavor of its own, which means every bit of what you taste comes from the sauce coating it. The Sichuan chili sauce delivers enough heat to make you sweat, which paradoxically makes you feel cooler, and the cold jelly underneath provides instant temperature relief with every bite.

The whole thing can be made ahead. The jelly sets in the fridge and keeps for up to three days before the starch structure starts to break down and becomes too brittle. Make a batch on Sunday and eat it across three days of summer lunches with barely any effort.

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Suan La Liang Fen Recipe

Ingredients

Jelly Noodles

• 90 g mung bean starch
• 1000 ml water

Chili Sauce

• 3 cloves garlic, minced
• 2 tbsp Sichuan chili flakes
• 1 tbsp Sichuan peppercorn powder
• 1 tsp sesame seeds
• ½ tsp salt
• ¼ tsp MSG
• 1.5 tbsp light soy sauce
• 1.5 tbsp Chinese black vinegar
• ½ cup neutral oil

Garnish

• Scallions, thinly sliced
• Roasted peanuts

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Instructions

Make the Jelly Noodles

1. In a pot, combine the mung bean starch and water. Whisk until the starch has fully dissolved with no lumps remaining. The mixture should look completely clear and watery at this stage.
2. Place over medium heat and stir constantly until the mixture thickens to the consistency of a thin pancake batter and turns from opaque white to translucent and glossy. This takes about 5-8 minutes. Do not stop stirring or the starch will stick and burn on the bottom.
3. Pour the thickened starch into a clean bowl or container and smooth the surface. Let cool to room temperature, about 1 hour.
4. Transfer to the refrigerator and let set for at least 3 hours until fully firm. The jelly is ready when it holds its shape cleanly when unmolded.
5. Unmold and cut into your desired shape. Use a jelly cutter for thin, slippery noodles or a knife for thick noodles or blocks. All shapes work equally well with the sauce.

The jelly will keep in the refrigerator for up to 3 days. After that the starch structure begins to break down and the texture becomes brittle and grainy. Make it fresh within that window.

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Make the Chili Sauce

1. In a heat-safe bowl, combine the minced garlic, Sichuan chili flakes, peppercorn powder, sesame seeds, salt, and MSG.
2. Heat the neutral oil to about 400°F (200°C) in a small pot or pan until just beginning to smoke.
3. Pour the hot oil directly over the chili mixture in one confident stream. It will sizzle aggressively and the fragrance will bloom immediately. Stir to combine.
4. Add the light soy sauce and black vinegar and stir again. Taste and adjust the balance between sour, salty, and spicy to your preference.

If you want to save time, a good quality store-bought chili oil fortified with a splash of light soy sauce and black vinegar works well as a shortcut. The homemade version is worth making if you have the time.

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Assemble

1. Place the jelly noodles in a bowl.
2. Spoon over the chili sauce generously, as much or as little heat as you want.
3. Top with sliced scallions and roasted peanuts.
4. Toss everything together at the table just before eating.

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Tips

• Stir constantly while cooking the starch. The moment you stop stirring, the starch can scorch on the bottom of the pot. Keep the spoon or spatula moving the entire time it is on the heat.
• Don’t rush the set time. Three hours is the minimum for the jelly to firm up enough to cut cleanly. Less than that and the center will still be too soft and the noodles will fall apart when you try to portion them. Overnight in the fridge is ideal.
• Get the oil hot enough. The oil needs to be at or above 400°F to properly bloom the Sichuan chili flakes and peppercorn powder. Warm oil poured over chilies does nothing. Hot oil transforms them. If you don’t have a thermometer, the oil is ready when a single chili flake dropped in sizzles immediately and aggressively.
• Cut the noodles cold. Trying to cut warm liang fen results in soft, sticky pieces that fall apart. Let the jelly set completely in the fridge before cutting and the pieces will come out clean and defined.
• Make extra sauce. The chili sauce here is versatile enough to use on rice, cold noodles, tofu, or literally anything else in the fridge. Make a full batch and keep it in a jar.

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Serving Suggestions

Liang fen is traditionally served as a standalone snack or light meal, which is exactly how I ate it in Chengdu. For something more substantial, it works alongside a simple cold cucumber salad, steamed dumplings, or as part of a larger Sichuan-inspired spread. It also pairs naturally with other cold dishes in your summer rotation — a bowl of liang fen and a serving of the canned tuna laab on the same table is a genuinely excellent lunch.

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Final Thoughts

Liang fen is the kind of dish that surprises people the first time they eat it. The texture is unlike anything most people have encountered, the sauce is more aggressive than they expect, and the combination of cold jelly and fiery Sichuan sauce is more refreshing than it has any right to be.

Two ingredients, four hours of mostly hands-off time, and one of the most interesting things you can put on your summer table. The strangest thing I ate in Chengdu turned out to be one of the dishes I make most often at home.

That tends to be how it goes with the best food.

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