Equipment
Ingredients
Tofu Preparation
- 450 g extra-firm tofu, drained and pressed
- 15 g cornstarch, dry powder
- 2 g fine sea salt
- 30 ml neutral high-heat cooking oil
Fresh Vegetables and Aromatics
- 250 g fresh green beans, trimmed and halved into 5-cm segments
- 150 g red bell pepper, stemmed, seeded, and sliced into 1-cm wide strips
- 100 g carrot, peeled and sliced into thin 5-cm matchsticks
- 2 serrano chiles, thinly sliced into rounds
- 4 garlic, peeled and finely minced
- 15 g fresh ginger, peeled and finely minced
- 3 scallions, trimmed and cut into 3-cm lengths, white and green parts separated
Savory Stir-Fry Sauce
- 60 ml vegetable broth
- 30 ml soy sauce
- 10 ml dark soy sauce
- 15 ml rice vinegar
- 10 ml pure maple syrup
- 8 g cornstarch, dry powder
- 5 ml toasted sesame oil
Nutrition (per serving)
Nutrition is estimated per serving. Nutrients without complete source data are omitted.
Full nutrition
- Calories
- 247 kcal
- Protein
- 13 g
- Carbohydrates
- 22 g
- Fat
- 14 g
- Fiber
- 5 g
- Sugar
- 9 g
- Sodium
- 1188 mg
- Saturated Fat
- 2 g
- Potassium
- 572 mg
- Calcium
- 337 mg
- Iron
- 3.4 mg
- Magnesium
- 67 mg
- Phosphorus
- 172 mg
- Zinc
- 1.5 mg
- Vitamin A
- 293 mcg
- Vitamin C
- 75 mg
- Water
- 206 g
Sources: Aggregated Public Data, USDA FoodData Central
Method
Drain the 450 g block of extra-firm tofu, wrap it in clean towels, and press using a tofu press or heavy weight with paper towels for 20 minutes at room temperature (20°C to 22°C / 68°F to 72°F) to expel surplus surface moisture.
Transfer the pressed tofu to a cutting board and cut the block with a chef's knife into even 2.5-cm (1-inch) cubes.
Place the tofu cubes into a small mixing bowl, sprinkle evenly with 2 g fine sea salt and 15 g cornstarch, and toss gently until every cube is lightly and evenly coated.
In a small mixing bowl, whisk together 60 ml vegetable broth, 30 ml soy sauce, 10 ml dark soy sauce, 15 ml rice vinegar, 10 ml pure maple syrup, and 8 g cornstarch until completely smooth.
Using the cutting board and chef's knife, trim and cut the 250 g fresh green beans into 5-cm lengths, slice the 150 g red bell pepper into 1-cm strips, cut the 100 g carrot into matchsticks, slice the 2 serrano chiles, finely mince the 4 cloves of garlic and 15 g ginger, and cut the 3 scallions into 3-cm segments separating the white and green portions.
Set the wok or 30-cm non-stick skillet over medium-high heat, add 15 ml neutral cooking oil, and swirl until shimmering at approximately 180°C (356°F).
Add the cornstarch-dusted tofu cubes in a single layer to the hot wok and sear undisturbed for 4 minutes, then use the wok spatula to flip and cook for another 3 minutes until every side is golden brown and crisp.
Transfer the seared tofu cubes with the wok spatula to the plate lined with paper towels to drain excess surface oil.
Return the wok to high heat at 190°C (374°F), add the remaining 15 ml neutral cooking oil, then add the trimmed green beans and carrot matchsticks, stir-frying actively for 3 to 4 minutes until the beans blister and show charred spots.
Add the red bell pepper strips, sliced serrano chiles, minced garlic, minced ginger, and scallion whites to the wok, stir-frying constantly for 1 to 2 minutes until intensely aromatic.
Whisk the sauce mixture once more to lift settled cornstarch, pour it into the center of the wok, and stir vigorously with the wok spatula for 1 minute as it bubbles vigorously at 100°C (212°F) and thickens into a glossy glaze.
Add the seared tofu cubes and the reserved scallion greens into the wok, folding gently with the wok spatula for 1 minute until the tofu is heated through and glazed in sauce.
Remove the wok from heat, drizzle 5 ml toasted sesame oil over the stir-fry, and verify with an instant-read thermometer that the tofu and vegetables register at or above 74°C (165°F) before dishing up.
Chef's Notes
- Dry-blistering (gan bian) is an essential Chinese technique: stir-frying green beans in high heat causes the skin to blister and wrinkle, driving out excess moisture while developing deep sweetness and a tender-crisp snap.
- Cornstarch dredging creates an impermeable protective barrier on the tofu, locking in interior tenderness while building a crunchy shell that drinks in the savory sauce without going limp.
- Control the fiery kick by adjusting the serrano chiles: leaving the white pith and seeds in provides an intense burn, while removing the internal ribs softens the pungency to a gentle tingle.
- Never overcrowd the wok during the vegetable saute: if cooking for a larger party, blister the green beans and peppers in separate batches to avoid steaming them in their own juices.
Storage
Refrigerator: 4 days — Store in an airtight glass container. Cool promptly and refrigerate within 2 hours of preparation.
Reheating: Reheat in a preheated wok or skillet over medium-high heat with 15 ml of water or vegetable oil until steaming and reaching an internal temperature of at least 74°C (165°F), or microwave on high for 2 to 3 minutes until uniformly heated throughout to 74°C (165°F).
Troubleshooting
Tofu cubes stick to the bottom of the wok and crumble when flipped
Cause: The pan was not sufficiently heated before adding the tofu, or the cubes were moved before a resilient sear formed
Fix: Leave stuck cubes in place over heat until the bottom crust crisps fully and releases naturally; do not force-scrape them
Prevention: Ensure the oil is shimmering hot and let the cornstarch crust set undisturbed for at least 3 to 4 minutes before attempting to turn the cubes
Green beans remain tough and stringy instead of crisp-tender
Cause: The green beans were too thick or the wok temperature dropped, preventing rapid steam-blistering
Fix: Add 30 ml of hot vegetable broth or water around the perimeter of the wok, cover immediately with a lid, and steam for 90 seconds before introducing the sauce
Prevention: Select slender, fresh pods and maintain maximum stove heat during the dry-blistering phase
The stir-fry sauce is runny and pools at the base of the wok
Cause: Cornstarch remained stuck to the bottom of the prep bowl, or the wok did not reach a full boil to activate the starch gelatinization
Fix: Mix 4 g of cornstarch with 15 ml of cold water in a small cup, stir the slurry into the bubbling wok, and simmer for 30 seconds until thickened
Prevention: Always whisk the sauce immediately before pouring into the wok and allow it to reach a rapid boil for at least 30 seconds
Cultural Context
Stir-frying fresh green beans with punchy aromatics and chiles takes direct inspiration from Sichuan dry-fried green beans (Gan Bian Si Ji Dou), a celebrated classic celebrated for blistering vegetables directly in hot oil to create charred skins and concentrated flavor. This vibrant version incorporates golden seared tofu and crisp seasonal vegetables, reflecting the Chinese culinary tradition of balancing contrasting textures (cui for crunch, nen for tender) into a nourishing, high-protein plant-based main course.










