Vietnamese Lemongrass-Pepper Beef Burgers

Name: Vietnamese Lemongrass-Pepper Beef Burgers
Prep time: 20 min
Cook time: 12 min
Total time: 32 min
Yield: 4 servings
Cuisine: Vietnamese
Ingredients: 1½ lb (680 g) ground beef (80/20 blend); 3 stalks fresh lemongrass stalks, pale parts only, trimmed and finely minced; 1 tbsp (15 ml) fish sauce; 1½ tsp (3 g) black peppercorns, freshly coarsely ground or cracked; 3 cloves garlic cloves, minced; 1 small (50 g) shallot, minced; 1 tsp (6 g) kosher salt; ¼ cup (30 g) panko breadcrumbs; 1 whole large egg, beaten; ½ cup (120 ml) mayonnaise; 1 whole fresh lime, zest and juice; 4 whole burger buns or brioche rolls; ½ cup (50 g) crispy fried shallots, store-bought or homemade; ½ cup (12 g) fresh cilantro, leaves only; 1 cup (150 g) pickled daikon and carrot (or cucumber), store-bought or homemade; 8 leaves crisp lettuce leaves (butter or iceberg); 1 tbsp (15 ml) neutral oil (vegetable or canola)

From the MyKitchenBank Kitchen

Aromatic beef burgers infused with fresh lemongrass, cracked black pepper, and fish sauce, grilled until charred and juicy. Topped with crispy fried shallots, pickled vegetables, cilantro, and a lime-mayo sauce for bright, layered Vietnamese flavors.

Prep: 20 min
Cook: 12 min
Wait: 30 min
Total: 1 hr 2 min
Makes: 4 burgers

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Ingredients

4 servings

For the patties
1½ lb (680 g) ground beef (80/20 blend)
3 stalks fresh lemongrass stalks, pale parts only, trimmed and finely minced
1 tbsp (15 ml) fish sauce
1½ tsp (3 g) black peppercorns, freshly coarsely ground or cracked
3 cloves garlic cloves, minced
1 small (50 g) shallot, minced
1 tsp (6 g) kosher salt
¼ cup (30 g) panko breadcrumbs
1 whole large egg, beaten
For the lime mayo
½ cup (120 ml) mayonnaise
1 whole fresh lime, zest and juice
For serving
4 whole burger buns or brioche rolls
½ cup (50 g) crispy fried shallots, store-bought or homemade
½ cup (12 g) fresh cilantro, leaves only
1 cup (150 g) pickled daikon and carrot (or cucumber), store-bought or homemade
8 leaves crisp lettuce leaves (butter or iceberg)
1 tbsp (15 ml) neutral oil (vegetable or canola)

Equipment (7)

Grill or grill pan
Cutting board
Sharp knife
Food processor or mortar and pestle
Large mixing bowl
Meat thermometer (optional but recommended)
4-inch (10 cm) burger mold or ring (optional)

Steps

Before you start

Remove ground beef from the refrigerator 30 minutes before forming patties so it's easier to work with
Preheat grill to medium-high heat (about 400°F/200°C)
Have all toppings prepped and assembled before cooking
If using wooden skewers, soak them in water for 15 minutes to prevent burning

1
Mix burger aromatics
- In a food processor or using a mortar and pestle, combine the minced lemongrass, garlic, minced shallot, and coarsely cracked black pepper.
- Process until fragrant and well combined, about 30 seconds.
- Do not overwork—you want some texture.
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Ready when: Aromatic mixture is finely minced and fragrant
Tip: Crack peppercorns by placing them on a cutting board and pressing with the side of a chef's knife before chopping. This releases more flavor than pre-ground pepper.
2
Form burger patties
- Place ground beef in a large bowl.
- Add the lemongrass mixture, fish sauce, panko, beaten egg, and salt.
- Using your hands, mix gently until just combined—do not overwork or the burgers will be dense.
- Divide into 4 equal portions and form into patties about ¾ inch (2 cm) thick, slightly wider than your buns since they'll shrink on the grill.
- Make a shallow thumbprint in the center of each patty to prevent bulging during cooking.
- Let patties rest in the refrigerator for at least 20 minutes.
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Ready when: Patties are formed and firm in the center from chilling
Tip: Overworking ground beef makes burgers tough and dense. Handle gently and stop as soon as everything is combined. The thumbprint helps the burgers cook evenly and prevents them from puffing up.
3
Make lime mayo
- In a small bowl, whisk together mayonnaise, lime zest, and 2 teaspoons (10 ml) of lime juice.
- Season with a pinch of salt if desired.
- Set aside until ready to serve.
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Ready when: Mayo is smooth and evenly colored with lime zest
4
Oil and preheat grillOven 400°F / 205°C
- Brush the grill grates with oil using a folded paper towel held with tongs.
- Preheat the grill to medium-high heat (400°F/200°C).
- If using a grill pan on the stovetop, heat it over medium-high heat until a drop of water sizzles immediately on contact.
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Ready when: Grill is very hot and ready to sear meat
Tip: Oiling the grill prevents sticking and helps create a good crust. If using a grill pan indoors, ensure good ventilation since the high heat will produce smoke.
5
Grill first side
- Place patties on the hot grill grates, leaving about 2 inches (5 cm) between them.
- Do not move them—let them sear undisturbed for 3 to 4 minutes until a dark, crusty char forms on the bottom.
- You should see juices beginning to pool slightly on top of the patties.
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Ready when: Bottom has a dark golden-brown crust; juices visible on top surface
Tip: Resist the urge to flip early. The patties need time to develop that flavorful char. Moving them too soon will prevent browning and stick them to the grill.
6
Flip and finish cookingOven 160°F / 70°C
- Flip the patties carefully using a sturdy spatula.
- Cook for another 3 to 4 minutes for medium doneness (an internal temperature of 160°F/71°C).
- For medium-rare, reduce this to 2.5 to 3 minutes (130–135°F/54–57°C at the center).
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Ready when: Internal temperature reaches 160°F (71°C) for well-done or 130–135°F (54–57°C) for medium-rare; juices run clear
Tip: Use a meat thermometer inserted horizontally into the center of a patty to check doneness accurately. Don't press down on the patties—this squeezes out flavorful juices.
7
Toast buns (optional)
- In the last minute of burger cooking, if desired, place buns face-down on the outer edges of the grill or grill pan (lower heat) for about 1 minute until lightly golden and warm.
- Watch carefully to prevent burning.
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Ready when: Buns are warm with light golden-brown color
Tip: Toasted buns stay firmer and won't get soggy from condiments and juices.
8
Assemble burgers
- Spread lime mayo on the bottom half of each toasted bun.
- Layer a lettuce leaf, then a cooked patty.
- Top the patty with a small handful of pickled daikon and carrot, a pinch of cilantro leaves, and a generous handful of crispy fried shallots.
- Cap with the top bun.
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Ready when: Burgers are fully assembled and ready to serve
Tip: Build burgers just before serving so the buns stay warm and toppings stay fresh and crisp. The fried shallots add a crucial textural contrast—add them last so they don't soften.

Good to know

Tips

For deeper flavor, toast the lemongrass stalks briefly in a dry skillet before mincing—this coaxes out more of their aromatic oils.
Don't skip the thumbprint in the center of each patty. It prevents the burger from puffing up into a ball and ensures even cooking.
If your ground beef is fatty (more than 20% fat), consider using an 85/15 blend instead to reduce grease flare-ups on the grill.
Serve immediately with lime wedges on the side so guests can add more brightness if they wish.

Make ahead

Burger patties can be formed up to 1 day ahead, covered tightly and refrigerated. Lime mayo can be made up to 3 days ahead and stored in the refrigerator. Fried shallots and pickled vegetables should be store-bought or prepared separately 1–2 days ahead.

Storage & reheating

Cooked burgers are best enjoyed immediately. Leftover cooked patties (without buns or toppings) can be wrapped individually and refrigerated for up to 3 days, then reheated gently in a 300°F (150°C) oven or skillet. Uncooked patties can be frozen for up to 3 months—do not thaw, just add 1–2 minutes per side to the grilling time.

Substitutions

fish sauce → soy sauce or tamari (use 1.5 tsp/7.5 ml). Fish sauce provides umami depth, but soy sauce works as a more familiar alternative, though the flavor will be slightly less funky and aromatic.
fresh lemongrass stalks → lemon zest plus a pinch of dried lemongrass (or lemon verbena). Fresh lemongrass is ideal, but 1 tbsp (5 g) of lemon zest plus 0.5 tsp (0.5 g) dried lemongrass provides similar brightness, though less aromatic impact.
crispy fried shallots → crispy fried onions or toasted sesame seeds. Fried shallots are essential for the authentic Vietnamese texture and sweetness. Fried onions are similar but milder; sesame seeds add crunch but not the same caramelized flavor.
pickled daikon and carrot (or cucumber) → fresh cucumber slices with a splash of rice vinegar and sugar. Pickled vegetables add bright acidity and crunch. Fresh cucumber with a quick vinegar pickle works if store-bought pickles aren't available.