Shacha Beef with Water Spinach
沙茶牛肉炒空心菜·(shā chá niú ròu chǎo kōng xīn cài)
家常菜 (Jiācháng Cài) - Meals Mom Cooked (The Weeknight Family Table)
The silver tin of Bullhead Shacha, a gritty, funk-laden paste of dried brill fish, shrimp, garlic, and shallots, drives this stir-fry. In Taiwan, it rules the re-chao (熱炒) joint—those rowdy, neon-lit stir-fry spots where friends gather over cheap Taiwan Beer and screaming-hot woks—earning the nickname "rice thief" (白飯小偷) because the gravy demands three bowls of white rice on sheer instinct. Pulling off that three-minute blister in a smoking flat-bottomed wok at home comes down to three prep-table rules: velvet the flank steak with a quarter-teaspoon of baking soda for fifteen minutes so the fibers relax, separate the crunchy hollow stems of the water spinach from the delicate leaves so nothing turns to mush, and wake the Shacha up in hot oil for ten seconds flat before it turns bitter—so have the rice scooped before the burner clicks on.
Before you start
Massage the beef with 1 tablespoon soy sauce, 1 tablespoon rice wine, 1 teaspoon shacha sauce, and the cornstarch, then coat with 1 tablespoon neutral oil and the sesame oil.
Work the liquids into the meat with your fingers until the beef feels plump and hydrated, then fold in the starch to create a protective velvet coating. Coating with oil last locks in the moisture and ensures the strips slide apart effortlessly when they hit the hot pan. Let sit at room temperature for 15 minutes.
Trim the water spinach and cut it into 2-inch lengths, separating the hollow stems from the leafy tops into two distinct piles.
Discard the tough bottom inch of the stalks. Because the crunchy stems take twice as long to cook as the delicate leaves, separating them is the single most important prep trick for an even stir-fry. Shake them as dry as possible.
Ingredients
- flank steak or sirloin3/4 lb
- soy sauce2 tbsp
- Taiwanese rice wine (Michiu) or Shaoxing wine1 1/2 tbsp
- Bullhead shacha sauce2 tbsp plus 1 tsp
- cornstarch or potato starch1 tbsp
- neutral oil3 tbsp
- toasted sesame oil1 tsp
- water spinach (ong choy)1 large bunch
- garlic4 large cloves
- fresh red chili1 small
- sugar1/2 tsp
- water2 tbsp
Method
- 01
Sear the marinated beef in 1 tablespoon of hot oil over high heat until it is 80 percent cooked, then remove it to a plate.
Get your wok or largest cast-iron skillet smoking hot. Spread the beef into a single layer, let it sear undisturbed for 15 seconds to catch some color, then toss for another 15 seconds until just a few streaks of pink remain. Pull it out immediately—it will finish cooking later.
- 02
Bloom the garlic, chili, and remaining 2 tablespoons of shacha sauce in the remaining 1 tablespoon of oil over medium heat for 10 to 15 seconds.
Drop the heat slightly so you don't scorch the paste. Stir constantly. You want the gritty solids of the shacha to sizzle in the fat until the kitchen smells intensely of toasted seafood and garlic, stopping right before it darkens and turns bitter.
- 03
Toss in the water spinach stems and 2 tablespoons of water, stir-frying for 30 seconds.
The splash of water is crucial: it instantly drops the pan temperature to save the shacha from burning while throwing up a cloud of steam that softens the tough, hollow stems while keeping them bright green.
- 04
Add the water spinach leaves, remaining 1 tablespoon soy sauce, and sugar, tossing for 30 seconds until the leaves just begin to wilt.
Adding the salt and soy sauce only after the stems have partially cooked prevents the greens from dumping all their water and turning your stir-fry into a soup.
- 05
Return the beef and its resting juices to the pan over high heat, splash the remaining 1/2 tablespoon rice wine around the rim, and toss for 20 seconds.
Work fast. Everything just needs to come together in a glossy, clinging sauce. The final kiss of wine hitting the hot metal edges gives you that unmistakable night-market aroma. Plate immediately.
Notes
Respect the Bullhead tin.
For real Taiwanese flavor, seek out the silver-and-red tin of Bullhead (牛頭牌) Shacha sauce. The oil always separates to the top, so dig your spoon all the way to the bottom and stir vigorously before measuring, or you'll leave all the savory dried fish and garlic behind.
Work with your American stove.
If you don't have a high-BTU gas burner and a carbon steel wok, use a wide, heavy cast-iron skillet. It holds enough heat to sear the beef without steaming it. If cooking on an electric flat-top that cools down slowly, keep a second burner set to medium so you can slide the pan over when blooming the shacha.
Substitute the greens if you must.
Water spinach is unmatched here for its hollow, crunchy stems. If your local market is out, regular spinach or gai lan (Chinese broccoli, stems peeled and sliced thin) will get dinner on the table, though the texture will be different.