Equipment
Ingredients
Vegetables and Aromatics
- 500 g swiss chard, washed, thoroughly dried, stems cut into 2.5cm batons, leaves cut into 5cm ribbons
- 2 shallots, peeled and thinly sliced into uniform 1mm rings
- 5 garlic cloves, peeled and thinly sliced into 2mm flat chips
- 45 ml neutral cooking oil, divided
Seasoning Sauce
- 20 ml fish sauce
- 2 g granulated sugar
- 30 ml water
- ½ g ground black pepper, freshly ground
Nutrition (per serving)
Nutrition is estimated per serving. Nutrients without complete source data are omitted.
Full nutrition
- Calories
- 136 kcal
- Protein
- 3 g
- Carbohydrates
- 9 g
- Fat
- 11 g
- Sugar
- 3 g
- Saturated Fat
- 1 g
- Zinc
- 0.5 mg
- Vitamin A
- 345 mcg
- Vitamin C
- 37 mg
- Vitamin D
- 0.0 mcg
- Vitamin E
- 4.0 mg
- Vitamin K
- 942 mcg
- Vitamin B6
- 0.3 mg
- Vitamin B12
- 0.0 mcg
- Water
- 132 g
Sources: Aggregated Public Data, USDA FoodData Central
Method
Whisk the fish sauce, granulated sugar, and water in a small bowl until the sugar crystals dissolve completely.
Heat 35 ml of neutral cooking oil in the wok over medium heat to 160°C (320°F), checking the temperature with a food thermometer.
Add the sliced shallots to the hot oil and fry, stirring constantly to separate rings and promote even browning, until pale golden straw in color.
Transfer the fried shallots using a fine-mesh skimmer to a paper towel-lined plate to drain and crisp up, leaving 15 ml of aromatic shallot oil in the wok and discarding or reserving any excess.
Increase the wok heat to medium-high at 180°C (356°F) and sauté the sliced garlic in the reserved shallot oil for 30 seconds until pale golden and intensely fragrant.
Add the chopped Swiss chard stems to the wok and sauté vigorously with a spatula for 2 minutes until they begin to soften while retaining crispness.
Add the Swiss chard leaves to the wok and sauté continuously for 1 minute until the leaves reduce in volume by half.
Pour the fish sauce mixture around the scorching outer rim of the wok and toss vigorously for 1 minute to coat the greens as the sauce reduces into a glossy glaze.
Remove the wok from the heat source and season the chard by tossing in the freshly ground black pepper.
Transfer the stir-fried greens to a serving platter and garnish with the reserved crispy shallots across the top immediately before serving.
Chef's Notes
- Stagger cooking between stems and leaves: Swiss chard stems are fibrous and take two full minutes to soften, whereas the tender leafy greens collapse and wilt within sixty seconds.
- Utilize the shallot-infused oil: Frying shallots first extracts sulfurous, sweet notes into the oil, which then seasons the garlic and coats every ribbon of chard during the stir-fry.
- Pour liquid around the wok perimeter: Pouring the fish sauce mixture along the hot sloping metal sides rather than directly into the greens flash-vaporizes raw pungent notes and yields restaurant-style wok aroma.
- Dry chard thoroughly prior to cooking: Residual wash water introduces unwanted steam that drops the wok temperature below searing point, resulting in watery, dull greens.
Storage
Refrigerator: 3 days — Cool promptly and store in an airtight container within 2 hours of cooking.
Reheating: Reheat thoroughly in a skillet over medium-high heat until steaming and heated to an internal temperature of at least 74°C (165°F).
Troubleshooting
Shallots turn dark brown, acrid, and bitter
Cause: Oil temperature was too high or shallots were left in the wok too long, allowing carryover residual heat to burn them
Fix: Cannot be fixed; discard scorched shallots, wipe the wok clean, and fry a fresh batch to avoid introducing bitterness to the greens
Prevention: Fry shallots gently over medium heat, stir constantly, and lift them out onto paper towels the instant they show a pale golden straw color
Swiss chard turns watery and limp instead of crisp-tender
Cause: Greens were wet when added to the pan or wok heat dropped too low, causing the vegetable to boil in trapped moisture
Fix: Tilt the wok to spoon out excess liquid immediately and toss over high heat for 30 seconds to evaporate remaining moisture
Prevention: Thoroughly dry the washed chard with a salad spinner or clean towels before cutting, and keep wok heat high throughout stir-frying
Garlic turns dark brown and tastes acrid
Cause: Garlic was sliced too thin or cooked too long before the moisture of the stems was added to regulate pan temperature
Fix: Cannot be fixed if burned; discard burned garlic and oil, wipe wok, and restart with fresh shallot oil and garlic
Prevention: Slice garlic into uniform 2mm chips and introduce the chard stems within 30 seconds of garlic hitting the hot oil
Cultural Context
In Vietnamese family-style meals (cơm gia đình), quick stir-fried greens—broadly referred to as rau xào—are essential companions to steamed rice and savory braised proteins. While water spinach (rau muống) and mustard greens (cải xanh) are traditional staples in Southeast Asia, Vietnamese diaspora home cooks readily adapt regional market greens like Swiss chard using the foundational pairing of garlic, fish sauce, and crispy shallots (hành phi). This approach highlights how Vietnamese culinary techniques transform hearty European produce into vibrant, umami-rich accompaniments.
