Di San Xian: Northeastern Potato, Eggplant, and Pepper Stir-Fry

Why You’ll Love This Recipe

• Classic Northeastern Chinese comfort food with a savory-sweet light soy glaze.
• Golden, bronzed potatoes and silky eggplant in perfect contrast with crisp-tender green peppers.
• Weeknight-friendly technique that delivers restaurant-level wok char without deep-frying.
• Uses everyday pantry staples and produce you can find anywhere.

Grocery List

• Produce: Chinese eggplant, Yukon Gold potatoes, green bell peppers, garlic
• Dairy: None
• Pantry: Light soy sauce, sugar, cornstarch, neutral oil, kosher salt, white pepper, sesame oil (optional)

Full Ingredients

For the Vegetables

• 1 lb (450 g) Chinese eggplant, cut into 2-inch long x 3/4-inch thick batons
• 12 oz (340 g) Yukon Gold potatoes, peeled and cut into 1/2-inch-thick wedges
• 2 medium green bell peppers (200 g), seeded and cut into 1-inch squares
• 4 large garlic cloves (12 g), thinly sliced

For the Sauce

• Light soy sauce 2 tbsp (30 ml)
• Granulated sugar 1 1/2 tsp (6 g)
• Cornstarch 2 tsp (6 g)
• Water or low-sodium vegetable stock 1/3 cup (80 ml)
• Ground white pepper 1/8 tsp
• Toasted sesame oil 1/2 tsp (optional)

For the Pan

• Neutral oil 7 tbsp (105 ml), divided
• Kosher salt 1 tsp (for potato water) + more to taste

Step-by-Step Instructions

Step 1: Prep and soak the eggplant

Trim and cut the eggplant into batons. Soak in a bowl of lightly salted cold water for 10 minutes to temper bitterness and reduce oil absorption. Drain and pat very dry with paper towels; moisture will cause sticking and splatter.

Step 2: Parboil the potatoes

Bring a medium pot of water to a boil and add 1 tsp kosher salt. Add potatoes and simmer for 5 minutes until the edges are just tender but the centers remain firm. Drain, then return to the hot pot off heat for 2 minutes to steam-dry. Spread on a plate to cool slightly; dry surfaces brown better.

Step 3: Mix the sauce

In a small bowl, whisk together light soy sauce, sugar, cornstarch, water (or stock), and white pepper until smooth. Add sesame oil if using. Keep the sauce near the stove; you will add it at the end to glaze.

Step 4: Bronze the potatoes

Heat a wok or large skillet over medium-high until hot (a wisp of smoke is ideal). Add 3 tbsp neutral oil. Fry the potatoes in a single layer, turning occasionally, until deeply bronzed on the edges, 4–5 minutes. Transfer to a plate.

Step 5: Sear the eggplant until silky

Add the remaining 3 tbsp neutral oil. Sear the dried eggplant in a single layer, turning once or twice, until both sides are golden and the pieces are tender and silky, 5–6 minutes. Transfer to the plate with the potatoes. Carefully pour off excess oil, leaving about 1 tbsp in the wok.

Step 6: Stir-fry garlic and peppers

Return the wok to medium-high heat. Add the sliced garlic and stir-fry just until fragrant, 15–20 seconds (do not brown). Add the green peppers and cook until crisp-tender with a few char spots, 1–2 minutes.

Step 7: Glaze and finish

Return the potatoes and eggplant to the wok. Give the sauce a quick stir (cornstarch settles), then pour it around the sides of the hot wok. Toss continuously until the sauce boils, turns glossy, and evenly coats the vegetables, 60–90 seconds. If it thickens too quickly, splash in 1–2 tbsp water. Taste and adjust salt if needed. Serve immediately while hot and glossy.

Pro Tips

• Use Chinese or Japanese eggplant for tender flesh and fewer seeds; globe eggplant can be spongy.
• Soaking and drying the eggplant dramatically cuts oil absorption and promotes even browning.
• Parboiling the potatoes ensures a creamy interior and speeds up wok time.
• Do not overcrowd the pan; sear in a single layer for true bronzing and light char.
• If the glaze seizes, thin with a tablespoon of hot water and toss over medium heat.

Variations

• Spicy Di San Xian: Stir-fry 1–2 dried red chilies with the garlic or add 1 tsp chili crisp with the sauce.
• Restaurant-Style Deep-Fry: Instead of searing, fry potatoes and eggplant separately at 350°F (175°C) until golden; drain well, then proceed from Step 6.
• Tangy Twist: Add 1 tsp Chinkiang black vinegar to the sauce for a lightly tangy finish (not traditional to this soy-sugar version).

Storage & Make-Ahead

Best served immediately for peak texture. You can parboil potatoes (Step 2) and mix the sauce (Step 3) up to 24 hours ahead; refrigerate both. Leftovers keep in an airtight container for up to 3 days. Reheat in a nonstick skillet over medium heat with a splash of water until hot and glossy. Freezing is not recommended.

Nutrition (per serving)

Approx. 280 calories; 11 g fat; 40 g carbohydrates; 6 g protein; 5 g fiber; 780 mg sodium. Values are estimates and will vary based on oil absorption and exact brands.