Lechon Belly Banh Mi

The moment you slide a piece of leftover lechon belly into a Vietnamese-style baguette, something irreversible happens to your understanding of what a sandwich can be.

Crunch. The skin — if you roasted it right the night before, or if you know a carinderia that does — gives under the bread's crust with this double-crack sound that's almost violent. Then the fat underneath, rendered and yielding, meets the pickled daikon and carrot, the cucumber slices, the slick of liver pâté and Sriracha mayo, and the whole thing shifts into a flavor that has no single country. It's not Filipino anymore, it's not Vietnamese. It's yours.

This is my version of the lechon banh mi. I've been making it for about two years, since a particular New Year's leftover situation in my mother's kitchen demanded a creative solution. We had half a belly slab, a bag of baguettes from the Jollibee run that morning, and a jar of do chua I'd made for a Vietnamese noodle dish the week before. Twenty minutes later, everyone had forgotten there was leftover lechon in the house. The proof: when I checked at lunchtime, there was none.

What You Need

(makes 4 sandwiches)

For the lechon belly:

• 1kg (2.2 lbs) whole pork belly
• 1½ tsp salt
• 1 tsp black pepper, coarsely ground
• 4 stalks lemongrass, bruised
• 6 cloves garlic, smashed
• 2 bay leaves

(Or: skip all of this and use leftover lechon belly. The recipe works either way.)

For the do chua (pickled vegetables — make these first):

• 200g (7 oz) daikon radish, julienned
• 150g (5 oz) carrots, julienned
• 1½ tsp salt
• 60ml (¼ cup) rice wine vinegar
• 60ml (¼ cup) water
• 1½ tbsp sugar

For the banh mi assembly:

• 4 small Vietnamese-style baguettes (or any crusty baguette)
• 60ml (¼ cup) liver pâté (store-bought is fine)
• 60ml (¼ cup) Japanese mayo
• 1 tbsp Sriracha (more if you want)
• ½ English cucumber, thinly sliced lengthwise
• 1 jalapeño, sliced thin (optional)
• Fresh cilantro, a handful
• 1 tbsp fish sauce (for the mayo mix)

How to Make It

Step 1: The lechon belly (start 3 hours before you eat)

Score the pork skin with a sharp knife — go about 3mm deep in a crosshatch pattern. Don't cut through to the meat. This is how you get the skin to blister and crackle evenly instead of puffing in one spot and being rubbery in three others.

Rub the salt and pepper all over, getting into those scored lines. Slide the lemongrass, garlic, and bay leaves underneath the belly — they'll perfume the meat from below. Let it sit uncovered in the fridge for at least an hour, or overnight if you have the time. The fridge air dries the skin, and a dry skin crisps. That's not a tip, that's just physics.

Roast at 160°C (320°F) for 1.5 hours, then crank to 230°C (445°F) for the last 20–25 minutes. The switch in temperature is what turns the skin from leather to cracklings. Watch it in the last 10 minutes — the difference between perfect and burnt is about 4 minutes and a distraction.

Rest for 15 minutes before slicing. Cut into thick 1.5cm slices.

Step 2: The do chua

This takes 20 minutes of effort and rewards every sandwich you make for the next week. Julienne the daikon and carrot into thin matchsticks. Toss with salt and let sit for 10 minutes — this draws out moisture, which means the pickle liquid gets to do its actual job instead of fighting water.

Rinse the salt off. Squeeze the vegetables dry in a clean kitchen towel. Make your pickling liquid — vinegar, water, sugar, stir until the sugar dissolves. Pack the vegetables into a jar, pour the liquid over, let sit at room temperature for at least 1 hour. After that, fridge. They'll last a week.

Step 3: The mayo spread

Mix the Japanese mayo with fish sauce and Sriracha. Taste it. Adjust. This is your 'secret sauce' and it takes 90 seconds. The fish sauce pushes the mayo into something that tastes like it was marinated rather than squeezed from a bottle.

Step 4: Assembly

Warm the baguettes in a 180°C (355°F) oven for 5 minutes. A cold baguette kills the texture. Slice lengthwise — leave one side attached so it opens like a book.

Spread liver pâté on one side, mayo on the other. Lay in 3–4 slices of lechon belly — don't be shy, this isn't a sandwich that rewards restraint. Add cucumber, a small mound of do chua, jalapeño if you're using it, and a handful of cilantro. Close. Press slightly so everything coheres.

Eat it over the sink. The juice will run.

Quick Macro Breakdown (per sandwich, approx.)

• Calories: ~580 kcal
• Protein: 26g
• Carbs: 42g
• Fat: 31g

The fat is mostly from the pork belly itself. You can lean the sandwich out by slicing thinner, but you'll feel the absence.

Why This Works

There's a version of this that's already happening in every Filipino neighborhood where Vietnamese immigrants moved in — in Kearny Mesa, in Springvale, in certain streets in Makati that nobody's written a food essay about yet. The cook who roasts the lechon for the party is often the same cook who stops at the Vietnamese place on the way home, because that place is also family-run, also smells of something simmering, also gives you too much food for the price. That crossover happened before any food writer noticed.

The logic is simple enough once you see it: lechon belly and banh mi are both built on contrast. Crunch and yield. Rich and acid. Warm and cold. Vietnamese cooking runs on the same tension Filipino cooking does — it's just formatted differently. Banh mi gives the lechon a portable chassis. Do chua gives it what atchara gives lechon at every Filipino table: something tart enough to remind you the fat was real.

Put those two together and the sandwich stops being fusion food. It starts being Tuesday lunch.

Two Notes on Flexibility

The lemongrass and garlic stuffing is flexible — skip it if you don't have it. The lechon's exterior seasoning does most of the heavy lifting. What is NOT flexible: the skin has to be dry before roasting. If it's wet, you get softer skin no matter what you do after.

The baguette is flexible — a standard French baguette works. What's not flexible: it needs to be fresh and crusty. A soft baguette doesn't provide the structural contrast and the sandwich collapses into a mess.

One More Thing

If you want to use leftover lechon belly — and you should — reheat the slices in an air fryer at 200°C (390°F) for 6–8 minutes. The skin re-crisps. The fat warms through. Thirty minutes later you have a reason to be glad you went to that party.

What's the best thing you've ever made from lechon leftovers? Drop it below.