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A bowl of Suan La Fen, hot and sour sweet potato glass noodles in a chili-oil and Chinkiang vinegar broth Recipe

Suan La Fen: A Journey to the Heart of Sichuan (From My Own Kitchen)

For months, my calendar had a single destination circled in red: China. My love for Chinese cuisine goes far beyond the standard takeout fare; I have always been captivated by the “obscure” dishes—the regional street foods that you find tucked away in narrow alleys, the recipes that haven’t been sanitized for global palates. I was ready to lose myself in the markets of Chengdu and the noodle shops of Chongqing.

However, as the departure date approached, the world began to feel a bit smaller and more complicated. In light of recent global events and rising tensions, I made the heartbreaking decision to cancel the trip. The disappointment was heavy. I had spent so long looking forward to the sensory overload of those streets that the sudden void in my schedule felt like a personal loss.

A steaming bowl of Suan La Fen, hot and sour sweet potato glass noodle soup, garnished with peanuts and scallions

Looking for a “pick me up” to shake off the travel blues, I turned to my kitchen. If I couldn’t go to Sichuan, I would bring Sichuan to me. I decided to tackle Suan La Fen—the iconic Hot and Sour Sweet Potato Glass Noodle Soup. From the moment the Chinkiang vinegar hit the hot chili oil, filling my apartment with that unmistakable tang, my spirits began to lift. It wasn’t the trip I planned, but as I sat down with that fiery, numbing bowl of comfort, I found exactly what I was looking for.

Suan La Fen (Hot & Sour Glass Noodle Soup)

Pro-Tip: The Magic of Chinkiang Vinegar

If there is one ingredient you cannot substitute in this recipe, it’s the Chinkiang Black Vinegar. Unlike white or rice vinegar, which offer a sharp, singular acidity, black vinegar is fermented and aged. It has a malty, woody, and slightly sweet complexity that anchors the heat of the chili oil. If you find the soup too “bright,” add an extra teaspoon of vinegar; it adds a depth that makes the broth feel like it’s been simmering for hours rather than minutes.

Recipe

Yields 2 servings · Prep 15 minutes · Cook 10 minutes

  1. Prepare the Noodles: Soak the sweet potato noodles in warm water for about 20 minutes to soften. Then, bring a pot of water to a boil and cook the noodles for 5–8 minutes (check package instructions) until they are translucent and chewy (al dente). Drain and set aside.
  2. Build the Flavor Base: In two large serving bowls, divide the minced garlic, black vinegar, soy sauce, chili oil, Sichuan peppercorn powder, sugar, and salt.
  3. Prepare the Broth: Bring your broth to a rolling boil. Pour the boiling broth directly into the serving bowls over the seasonings. The heat from the broth will “bloom” the garlic and spices instantly.
  4. Assemble: Add the cooked noodles to the bowls. Give them a quick toss to ensure they are coated in the spicy-sour mixture.
  5. Garnish: Top generously with roasted peanuts, scallions, cilantro, and pickled mustard greens.
  • 2 bundles (approx. 200g) Dried sweet potato glass noodles, thick version (for the noodles)
  • 3 tbsp Chinkiang black vinegar, the soul of the dish (for the soup base)
  • 2 tbsp Light soy sauce (for the soup base)
  • 2-3 tbsp Chili oil with sediment, adjust to your heat preference (for the soup base)
  • 1/2 tsp Sichuan peppercorn powder, toasted and finely ground (for the soup base)
  • 2 cloves Garlic, minced (for the soup base)
  • 1 tsp Sugar (for the soup base)
  • 1/4 tsp Salt, or to taste (for the soup base)
  • 3 cups High-quality chicken or vegetable broth (for the soup base)
  • 1/4 cup Roasted peanuts, crushed (for the toppings)
  • 2 Scallions, thinly sliced (for the toppings)
  • 1 small handful Fresh cilantro, chopped (for the toppings)
  • Pickled mustard greens (zha cai), for extra funk, optional (for the toppings)