Spicy Bang Bang Chicken Sandwich

This crispy, spicy, and utterly addictive Spicy Bang Bang Chicken Sandwich features ultra-crunchy buttermilk fried chicken drenched in a sweet-chili mayo sauce.

Why This Recipe Works:

• Buttermilk Brining: The lactic acid in buttermilk gently breaks down the chicken's protein matrix, ensuring every bite remains incredibly tender and juicy.
• Cornstarch Blend: Mixing cornstarch with all-purpose flour inhibits gluten formation, creating a shatteringly crisp, glassy crust that stays crunchy even under heavy sauce.
• Emulsified Bang Bang Sauce: Combining sweet chili sauce with Kewpie mayonnaise creates an oil-soluble flavor compound bond that clings beautifully to the crispy chicken.

Three summers ago, I stood in my sweltering apartment kitchen at midnight, desperately trying to recreate a late-night takeout craving while my cat judged me from the fridge top.

I wanted that specific, tongue-tingling crunch of fried chicken drenched in sweet-chili mayo.

But my first attempt was a soggy, oil-logged disaster that slid right off the bun. The breading pooled in the bottom of the skillet like wet paper towels, and I actually cried a little over the wasted chicken. It was a sad, greasy mess that ended up in the trash.

It was tragic.

Most home cooks fail here because they rely on standard all-purpose flour. Bear with me here, because without understanding starch gelatinization, your crust will turn to mush the second the sauce hits it.

I tested six different flour-to-starch ratios, and standard AP flour failed every single test.

The secret lies in the protein matrix of your batter. By introducing cornstarch, we inhibit gluten development, creating a glassy, shatteringly crisp shell that refuses to go soft. This is the exact same science we love in our Crispy Bang Bang Salmon Bites, and it works like absolute magic here.

Trust me on this one: you do not need a commercial deep fryer to get this absolutely perfect.

A heavy cast-iron skillet and a simple buttermilk brine will do all the heavy lifting for you, keeping the meat incredibly juicy while you prep the sauce.

Let's get frying.

Spicy Bang Bang Chicken Sandwich

• Publisher Storied Skillet
• Cuisine American / Asian Fusion
• Category Sandwiches, Dinner
• Prep Time 20 mins
• Cook Time 15 mins
• Servings 4
• Calories 680 calories
• Rating 4.8 5828
• Tags spicy chicken sandwich, bang bang chicken, crispy chicken sandwich, fried chicken sandwich

Ingredients

• 4 boneless, skinless chicken thighs
• 1 cup buttermilk
• 1 tablespoon hot sauce
• 1.5 teaspoons Diamond Crystal kosher salt (or 1 teaspoon fine sea salt)
• 1 cup all-purpose flour
• 1/2 cup cornstarch
• 1 tablespoon garlic powder
• 1 tablespoon smoked paprika
• 1 teaspoon cayenne pepper
• Vegetable oil, for shallow frying
• 4 brioche buns, toasted
• 1/2 cup Kewpie mayonnaise
• 1/3 cup sweet chili sauce
• 1 tablespoon sriracha
• 1 teaspoon rice vinegar
• Shredded lettuce and sliced pickles, for serving

Directions

1. In a large bowl, whisk together the buttermilk, hot sauce, and 1.5 teaspoons of Diamond Crystal kosher salt. Add the chicken thighs, ensuring they are completely submerged, and marinate in the fridge for at least 30 minutes.
2. In a shallow dish, whisk together the all-purpose flour, cornstarch, garlic powder, smoked paprika, cayenne pepper, and a pinch of salt.
3. In a small bowl, whisk together the Kewpie mayonnaise, sweet chili sauce, sriracha, and rice vinegar until smooth, then set aside.
4. Remove each chicken thigh from the buttermilk, letting the excess drip off, then dredge thoroughly in the flour mixture, pressing firmly so the flour clings to every nook and cranny.
5. Heat 1 inch of vegetable oil in a heavy cast-iron skillet to 350°F (175°C). Carefully lower the chicken into the hot oil and fry for 5-6 minutes per side, or until the crust is deep golden brown and the internal temperature reaches 165°F (74°C).
6. Fish the chicken out of the oil and let it drain on a wire rack. Toss each hot chicken piece in the prepared Bang Bang sauce until fully coated, then place on toasted brioche buns with shredded lettuce and pickles.

Notes

• Salt Conversion: This recipe specifies 1.5 teaspoons of Diamond Crystal kosher salt. If you are using Morton's kosher salt or fine sea salt, reduce the amount to 1 teaspoon to avoid over-salting.
• The Science of Crunch: Introducing cornstarch to the dredge inhibits gluten development in the protein matrix. This creates a glassy, shatteringly crisp shell that won't turn soggy when drenched in sauce.
• Temperature Control: Always use an instant-read thermometer to monitor your frying oil. If the oil temperature climbs past 375°F (190°C), the exterior of your chicken will burn before the interior is fully cooked through.
• Storage Behavior: Fried chicken is best enjoyed immediately. If you have leftovers, store the chicken and the sauce in separate airtight containers; otherwise, the crust will absorb moisture from the sauce and lose its crunch in the fridge.
• Mayonnaise Choice: Kewpie mayonnaise is highly recommended because its egg-yolk-only formula provides a richer, more stable emulsion than standard American mayo, helping the sauce cling to the chicken.

Serving Suggestions

Complete your ultimate comfort food feast by pairing this crispy sandwich with these delicious sides and toppings:

• Crispy Fries: Pair with Garlic Parmesan Potato Wedges for the ultimate comfort food feast.
• Zesty Slaw: Serve with a side of 5-Minute Mexican Slaw to cut through the richness of the fried chicken.
• Pickled Toppings: Add extra crunch by piling on homemade Pickled Red Onions.
• Refreshing Salad: Balance the heat with a cool, crisp Cucumber Dill Salad.

Storage and Reheating

Let's be completely honest: fried chicken is a creature of the present moment.

If you do find yourself with leftovers, store the chicken and the Bang Bang sauce in separate airtight containers in the fridge. Putting sauced chicken in the fridge is a one-way ticket to soggy town, and nobody wants that.

To revive that legendary crunch the next day, skip the microwave entirely because it will ruin the protein matrix and turn your beautiful crust into a rubbery disappointment. Instead, pop the naked chicken pieces into an air fryer at 375°F (190°C) for about 4 to 5 minutes, or reheat them on a wire rack in a 400°F (200°C) oven until the oil begins to sizzle and the crust crisps back up.

Once reheated, warm up your brioche buns, slather on a fresh batch of sauce, and assemble.

Ingredient Substitutes

If you need to adapt this recipe based on what's in your pantry, here are some easy swaps:

1. Buttermilk Substitute: Whisk 1 cup of whole milk with 1 tablespoon of lemon juice or white vinegar and let it sit for 5 minutes to curdle.
2. Kewpie Mayo Substitute: You can substitute regular mayonnaise, but add a pinch of sugar and a splash of rice vinegar to mimic Kewpie's distinct sweet-tangy profile.
3. Gluten-Free Option: Swap the all-purpose flour for a 1:1 gluten-free baking flour blend, keeping the cornstarch as-is for that essential crunch.
4. Chicken Thighs: If you prefer white meat, chicken breasts work beautifully, but slice them horizontally into thinner cutlets so they cook evenly without drying out.

Go tap your tongs against your hip, heat up that oil, and get ready for the best sandwich of your week—you've absolutely earned this.