Crispy Keto Pork Belly Lettuce Cups with Lime

Jump to Recipe

Keto pork belly lettuce cups pair crispy, seared pork belly cubes with cold butter lettuce and a lime-fish sauce glaze that cuts through all that fat. No rice, no wraps, no sugar-heavy sauce. Just pork, crunch, and bright acid.

I make this on weeks when I want something rich but low-carb, without a lot of prep. Pork belly renders its own fat in the skillet, so you don’t need oil, and the whole thing comes together in about 35 minutes.

The trick is patience at the stove. If you rush the sear or crowd the pan, the pork stays pale and chewy instead of crisp at the edges. Give it the full 12 to 15 minutes and let the fat do the work.

Pile the pork into lettuce leaves with cucumber, scallion, and cilantro, and you’ve got a dinner that eats like takeout without the carb crash after.

Why You’ll Love This Recipe

• Crispy pork belly with almost no added oil
• Ready in about 35 minutes start to finish
• Low-carb and keto-friendly, no rice or wraps
• Cool crunchy lettuce balances the rich pork

Ingredient Notes

• pork belly: Use skinless pork belly cut into 1/2-inch cubes so the fat renders evenly and the edges crisp fast.
• fish sauce: Adds salty depth. Swap coconut aminos plus a pinch of salt if you’re out.
• lime juice: Use fresh squeezed only, bottled juice tastes flat against the rich pork.
• coconut aminos: A soy sauce alternative that’s naturally gluten-free and a bit sweeter.
• butter lettuce: Sturdy enough to hold the filling without tearing. Bibb lettuce works the same way.
• peanuts: Crushed for crunch. Swap sunflower seeds or skip them for a nut-free version.

Crispy Keto Pork Belly Lettuce Cups with Lime

Crispy seared pork belly tossed in a lime-fish sauce glaze and piled into cold butter lettuce cups with cucumber, herbs, and crushed peanuts.

Print Recipe Pin Recipe

Prep Time 15 minutes mins

Cook Time 20 minutes mins

Total Time 35 minutes mins

Servings: 4 servings

Course: Main Course

Cuisine: Asian-Inspired

Calories: 700

Ingredients Method Notes

Ingredients

  

Pork Belly

• 500 g pork belly, skinless cut into 1/2-inch cubes
• 1 tsp salt
• 1/2 tsp black pepper
• 3 garlic cloves minced
• 1 tbsp fresh ginger grated
• 1 red chili sliced, optional

Glaze

• 2 tbsp fish sauce
• 3 tbsp lime juice about 2 limes, fresh squeezed
• 1 tbsp coconut aminos
• 1 tsp granulated sweetener (erythritol or monk fruit)

Lettuce Cups & Toppings

• 12 butter lettuce leaves to 16 leaves; from about 1 large head, rinsed and dried
• 1 cup cucumber diced small
• 3 scallions sliced thin
• 1/2 cup fresh cilantro leaves
• 1/4 cup roasted peanuts crushed, or sub sunflower seeds
• lime wedges for serving

Method

 

Sear the Pork

1. Pat the pork belly cubes completely dry with paper towels, then season with salt and pepper.
2. Heat a 12-inch (30 cm) skillet over medium heat. Add half the pork belly in a single layer, without crowding, and sear for 6 to 7 minutes, turning occasionally, until deeply golden and crispy at the edges. Remove and repeat with the second batch.
3. Return all the pork to the skillet and add the garlic, ginger, and sliced chili. Cook for 1 minute until fragrant, until the pork reaches at least 145 F / 63 C internally.

Make the Glaze

1. In a small bowl, whisk the fish sauce, lime juice, coconut aminos, and sweetener until the sweetener dissolves.
2. Pour the glaze over the pork in the skillet and toss to coat. Cook for 1 to 2 minutes, until the glaze thickens slightly and clings to the pork.

Assemble

1. Rinse the butter lettuce leaves and pat them dry, keeping them whole to use as cups.
2. Spoon the warm pork belly into each lettuce leaf.
3. Top with diced cucumber, sliced scallions, cilantro leaves, and crushed peanuts.
4. Serve immediately with lime wedges on the side.

Notes

• Pat pork belly bone dry before it hits the skillet
• Sear in batches, don’t crowd the 12-inch skillet
• Cook pork until it reaches at least 145 F / 63 C
• Use fresh lime juice, bottled juice tastes flat

Tips for Success

• Pat the pork belly cubes completely dry before searing so they crisp instead of steam in the skillet.
• Sear in two batches in the 12-inch skillet so the pork isn’t crowded and actually browns.
• Save a spoonful of rendered pork fat to drizzle over the lettuce cups before serving.
• Rinse the lettuce leaves and dry them well so they cup without cracking or tearing.
• Taste the glaze before tossing the pork in it and adjust the lime or fish sauce to your liking.

Variations

• Swap pork belly for pork shoulder cut into cubes for a leaner version with less rendered fat.
• Add sliced fresno chilies or a spoonful of chili crisp for a spicier glaze.
• Use napa cabbage leaves instead of butter lettuce for a sturdier, crunchier cup.

Storage and Reheating

Store leftover pork belly in an airtight container in the fridge for 3 to 4 days. Keep it separate from the lettuce and toppings so nothing wilts.

Reheat the pork in a 12-inch (30 cm) skillet over medium heat for 3 to 4 minutes, stirring often, until the edges crisp back up and it’s warmed through.

Don’t store assembled lettuce cups. Wash and dry the lettuce, cucumber, and herbs fresh each time you want to eat, since the pork keeps well but the lettuce doesn’t.

Serving Suggestions

Pile the pork belly into lettuce leaves at the table so everyone builds their own cup. Set out extra lime wedges, a small bowl of crushed peanuts, and sliced chili for anyone who wants more heat.

Serve alongside a simple cucumber salad or a bowl of cauliflower rice if you want something to soak up the extra glaze.

For drinks, a cold glass of unsweetened iced tea works well against the richness of the pork.

FAQ

Why is my pork belly chewy instead of crispy?

Chewy pork usually means the pieces weren’t dried well or the pan was crowded, so they steamed instead of seared. Pat the cubes dry with paper towels and sear in two batches in the skillet, giving each piece space to brown for the full 12 to 15 minutes.

Can I use pork shoulder instead of pork belly for these lettuce cups?

Yes, pork shoulder works, though it has less fat so it won’t crisp the same way. Cut it into similar 1/2-inch cubes and add a teaspoon of oil to the skillet since shoulder won’t render enough fat on its own.

Can I make the pork belly filling ahead for meal prep?

Yes, the seared pork keeps in the fridge for 3 to 4 days in an airtight container. Reheat it in a skillet until the edges crisp back up, then assemble the lettuce cups fresh with cold toppings right before eating.

What goes well with keto pork belly lettuce cups besides the toppings listed?

A cucumber salad, cauliflower rice, or a bowl of miso soup all work as sides. The pork is rich and salty, so something cool and simple on the plate balances it out.

Are keto pork belly lettuce cups gluten free?

Yes, as long as you use coconut aminos instead of regular soy sauce and check your fish sauce brand for hidden wheat. Most fish sauce is gluten free, but a few brands add wheat as a thickener, so read the label.

What’s the difference between these lettuce cups and Korean ssam?

Korean ssam usually wraps grilled or braised meat with rice and ssamjang in lettuce or perilla leaves, while this recipe skips the rice and uses a lime-fish sauce glaze instead of a fermented paste. Both use lettuce as the wrap, but the flavor here leans Southeast Asian rather than Korean.