Rad Na (ราดหน้า)

The Dish That Lives on Its Noodles

ราดหน้า means "pour on top" — the name is the method. But Chef Net's technique piece at Krua.co puts the real priority first: "I choose my rad na by the noodles" — เส้นคั่ว, noodles charred in a wok until some strands scorch, or เส้นทอดกรอบ, noodles dredged and deep-fried to a cracker. Both exist to stand up to the gravy, and both are the reason the dish has two schools.

The gravy is the Chinese-Thai engine: garlic and tao jiao, fermented soybean paste fried to fragrance, marinated pork stirred through, stock poured in, then tapioca starch whisked to a gloss. The Khaosod source's marinade does the velvet trick properly — starch, a little water, and baking soda, kneaded and rested at least half an hour, so the pork comes out soft instead of stringy. The kana goes in at the end, two stirs only, so the stems stay crisp against the soft gravy.

And the essential flavour note is the black pepper. Wongnai's home version seasons with white soy and pepper at the finish; the trueid source's gravy leans on the stock and tao jiao. Without the pepper, the dish slides into blandness — with it, the gravy has a proper Chinese-restaurant bite.

The Recipe (serves 2–4 — the TrueID version, with Khaosod's marinade)

For the slurry: 1 tbsp tapioca starch + 1 tbsp coconut sugar dissolved in water (Khaosod). Wongnai's shop-style extras: one egg cracked into the charring noodles, and blanched straw mushrooms in the gravy.

The Method

1. Marinate the pork. Massage the sliced pork with the starch, a splash of water, baking soda, pepper, white soy, seasoning sauce and oyster sauce. Rest 30 minutes minimum — the soda is the velvet step.
2. Char the noodles. Pull the rice noodles into strands, toss with white soy, dark soy and seasoning sauce, then char in a very hot wok with a little oil until some edges scorch. Set aside.
3. Build the base. Fry the chopped garlic until it smells, add the tao jiao and fry until fragrant.
4. Pork, then stock. Stir-fry the pork until just cooked, pour in the stock, bring to the boil.
5. Thicken. Stir in the starch-and-coconut-sugar slurry, keep stirring until the gravy glosses and clings to the spoon.
6. Finish and pour. Kana and pepper in, two stirs, then ladle the gravy over the charred noodles at once. Chillies in fish sauce on the side.

Where Thai Sources Disagree

How Western Versions Get It Wrong

• Boiled noodles. If the noodles were never charred or fried, the dish collapses into soup. The char is the dish.
• Cornflour-only gravy. Tapioca starch is the Thai thickener — it sets glossier and clearer than cornflour.
• Skipping tao jiao. The fermented soybean paste is the gravy's signature depth. Plain stock is a different, thinner dish.
• Broccoli instead of kana. Rad na uses Chinese broccoli — thick stems, flat leaves. Western broccoli cooks to mush in the gravy.
• Making it a stir-fry. Rad na is noodles under a poured gravy — two textures, not one wok-mix. Stir-frying everything together makes pad see ew.

UK Ingredient Notes

• Fresh wide rice noodles (เส้นใหญ่): vacuum packs at Thai grocers — "ho fun" or "sen yai". Don't use dried rice noodles; the texture is wrong.
• Tao jiao (เต้าเจี้ยว): salted soybean paste, at Thai grocers. Yellow bean sauce is close but saltier — taste before adding soy.
• Chinese broccoli (คะน้า): "kailan" at Chinese grocers. Tenderstem broccoli in a pinch.
• Seasoning sauce (ซอสปรุงรส): Golden Mountain — Thai grocers.
• Chillies in fish sauce (พริกน้ำปลา) is the standard side — bird's-eyes in fish sauce, always.

Sources

This recipe is translated from the following Thai-language sources. Where they disagree, we've said so.