Burger King Teriyaki Whopper Jr (Copycat, Chef-Crafted)

This chef-crafted, copycat Teriyaki Whopper Jr channels the spirit of flame-grilled American fast food with a glossy, sweet-salty Japanese teriyaki twist. Imagine a juicy, char-kissed beef patty brushed in a pineapple-kissed glaze, crowned with tender teriyaki onions, crisp iceberg, and sun-ripe tomato on a toasted sesame bun. It’s familiar comfort, elevated—balanced, aromatic, and irresistibly saucy. Designed for home kitchens, this version layers texture and umami for a satisfying, diner-worthy bite.

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Prep Time 20

Cook Time 24

Total Time 44

Course Main Course

Cuisine Fusion / Other

Servings burgers

Calories 703 kcal

Ingredients

Teriyaki Glaze

½ cup low-sodium soy sauce Choose a smooth, naturally brewed brand for best flavor
¼ cup 100% pineapple juice Not from concentrate, for balanced sweetness and brightness
3 tbsp dark brown sugar, packed Dark for deeper molasses notes
2 tbsp mirin If unavailable, add 2 tbsp extra pineapple juice + 1 tsp sugar
1 tbsp rice vinegar Unseasoned, to balance sweetness
1 tsp fresh ginger, finely grated Microplane for a smooth texture
2 cloves garlic, minced About 2 tsp, minced very fine
1 tsp toasted sesame oil Aromatics; add off the heat for best aroma
¼ tsp black pepper Freshly ground
2 tsp cornstarch Thickens the glaze so it clings to the patty
1 tbsp cold water For cornstarch slurry

Teriyaki Onions

1 tbsp neutral oil Canola or avocado oil
1 medium sweet onion, thinly sliced Vidalia or similar; about 1 1/2 cups
1 pinch kosher salt Helps onions soften and brown evenly
2 tbsp prepared teriyaki glaze From above; for finishing onions

Beef Patties

1 lb 80/20 ground beef, well-chilled 80% lean for juiciness; keep cold for better browning
1 ¼ tsp kosher salt Diamond Crystal; use 3/4 tsp if Morton
½ tsp black pepper Freshly ground

Buns & Toppings

4 pieces sesame seed burger buns Soft-style buns, Jr-sized if available
2 tbsp unsalted butter, softened For toasting buns
¼ cup mayonnaise Kewpie recommended for extra umami; regular mayo works
1 cup iceberg lettuce, finely shredded Ice-cold and well-dried for crunch
8 slices ripe Roma tomato About 2 medium tomatoes, sliced 1/4-inch thick
8 chips dill pickles (optional) Adds brightness to cut the glaze
4 slices American cheese (optional) For a melty, classic fast-food note

For Assembly

¼ cup additional teriyaki glaze, warm For brushing patties and drizzling during assembly

Instructions

Make the teriyaki glaze (5 minutes): In a small saucepan, whisk together soy sauce, pineapple juice, brown sugar, mirin, rice vinegar, ginger, garlic, and black pepper. Bring to a gentle simmer over medium heat. In a separate cup, stir cornstarch with cold water to make a slurry, then whisk it into the saucepan. Simmer, stirring, until glossy and just thick enough to coat a spoon, about 5 minutes. Remove from heat and stir in sesame oil. Keep warm. Sensory cue: the glaze should be shiny, pourable, and aromatic with ginger-garlic.
Cook the teriyaki onions (7 minutes): Heat neutral oil in a skillet over medium to medium-high heat. Add sliced sweet onion and a pinch of kosher salt; cook, stirring occasionally, until tender and lightly golden at the edges, 6–7 minutes. Reduce heat to low, add 2 tbsp teriyaki glaze, and toss to coat for 30 seconds. Sensory cue: onions should be silky with a mahogany sheen.
Prep toppings and buns (part of 20-minute prep): Shred the iceberg lettuce and pat dry. Slice tomatoes. Split buns and spread cut sides lightly with softened butter; set aside. If using cheese, have slices ready.
Form and season patties (part of 20-minute prep): Divide the ground beef into 4 equal portions (about 4 oz each). Gently shape into 4-inch rounds and press a shallow dimple in the center of each to prevent doming. Season both sides with kosher salt and black pepper just before cooking. Tip: handle minimally to keep patties tender.
Heat your cooking surface (5 minutes): For a grill, preheat to medium-high, about 450°F (232°C). For a broiler, set to High, about 500°F (260°C) and preheat a rack 6 inches from the element. For a cast-iron skillet, preheat over medium-high until a drop of water skitters on the surface (about 5 minutes).
Cook the patties (6 minutes): Grill or sear the patties for 3 minutes on the first side until well browned and edges look set. Flip, cook 2 minutes, then brush the tops with teriyaki glaze and cook 1 minute more (add cheese now if using). Target doneness is medium to medium-well; for food safety, ground beef should reach 160°F (71°C). Sensory cue: sizzling edges, caramelized glaze, beefy aroma.
Toast the buns (1–2 minutes): Place buttered buns cut-side down on the grill or skillet until lightly golden, 1–2 minutes. They should smell nutty and feel crisp at the edges while remaining soft inside.
Assemble (2 minutes): Spread mayonnaise on the bottom bun. Add a few pickle chips (optional), then the glazed patty. Spoon a ribbon of warm teriyaki glaze over the patty, top with a generous forkful of teriyaki onions, a tuft of shredded iceberg, and 2 tomato slices. Crown with the top bun.
Rest and serve (1 minute): Let the burger sit for 1 minute so juices settle and the glaze sets slightly. Serve immediately while the bun is warm and the lettuce stays crisp.

Notes

Chef’s Tips

Glaze balance: If it tastes too salty, whisk in 1–2 tsp pineapple juice. If too sweet, add 1–2 tsp rice vinegar.
Extra char: For a fast-food-style char, broil the cooked, glazed patty for 20–30 seconds to kiss the glaze with caramelization.
Dietary tweaks: Use a plant-based patty and vegan mayo; swap butter for neutral oil and check your bun is vegan-friendly.
Onion shortcut: To speed browning, add a pinch of sugar to onions at the 3-minute mark.
Sauce texture: Mortar-and-pestle the ginger and garlic with a pinch of salt for a smoother, more integrated aromatic paste. A mini food processor works too.

Serving Suggestions

Plate the burger slightly off-center on a warm plate. Drizzle a fine zigzag of teriyaki glaze around the rim and sprinkle a few toasted sesame seeds for visual echo. Serve with crisp shoestring fries or sesame-cabbage slaw and a chilled yuzu soda, iced tea, or a light lager. Visual cues of perfection: a glossy, lacquered patty; vibrant green lettuce; ruby tomato; and steam rising as you lift the top bun.

Culinary Context

This burger bridges American flame-grilled classics with Japanese teriyaki—an approach popularized by fast-food chains and home cooks alike. Pineapple juice nods to the sweeter regional teriyaki styles, while the char and sesame bun keep it comfortingly familiar. My first inspiration for this glaze came from a Tokyo diner where the chef brushed yakitori with tare until it shone—this burger borrows that same lacquered brilliance.

Optional Advanced Instructions

Make-ahead: Teriyaki glaze and onions can be made up to 3 days ahead; store chilled and warm gently to serve.
Parallel cooking: Start the onions while the glaze simmers; preheat the grill as onions finish to keep total cook time tight.
Beginner alternative: Use a nonstick skillet for easier cleanup and more forgiving searing.

Timing

Prep Time: 20 minutes (0 hr 20 min)
Cook Time: 24 minutes (0 hr 24 min)
Total Time: 44 minutes (0 hr 44 min)

Course

Lunch or Dinner

Origin / Cuisine

Japanese-American fast-food fusion

Extra Tips

Salt brands vary: If using Morton kosher salt, reduce to 3/4 tsp for the patties.
Bun integrity: Lightly toasting prevents sogginess from the glaze and keeps structural bite.
Heat control: If glaze thickens too much as it cools, whisk in 1–2 tsp warm water to loosen to a brushable consistency.

Nutrition

Calories: 703kcalCarbohydrates: 33gProtein: 30gFat: 50gSaturated Fat: 18gPolyunsaturated Fat: 9gMonounsaturated Fat: 18gTrans Fat: 2gCholesterol: 122mgSodium: 3539mgPotassium: 869mgFiber: 3gSugar: 24gVitamin A: 1137IUVitamin C: 15mgCalcium: 309mgIron: 4mg

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