Pork Loin Recipe Vietnamese: Lemongrass-Marinated Grilled Tenderloin

This Vietnamese-inspired pork loin delivers tender, aromatic results with a simple marinade that works its magic overnight. The key is fresh lemongrass, which infuses the meat with bright, citrusy depth.

I developed this method after testing various marinating times and heat levels to achieve perfectly juicy pork every time. Grilling at high heat creates a caramelized exterior while keeping the inside succulent.

The lemongrass marinade tenderizes the pork while adding complex flavor that’s both fragrant and slightly sweet. A quick sear finishes the dish with professional-quality results.

Serve with rice and fresh herbs for a complete meal that tastes like it came from a Hanoi street food stall. The technique is straightforward but the flavors are anything but ordinary.

Ingredients for Pork Loin Recipe Vietnamese

Fresh lemongrass, pork loin, and bold flavors make this dish unforgettable with minimal effort.

The lemongrass is non-negotiable here. Look for firm, pale yellow stalks at Asian markets or well-stocked supermarkets like Whole Foods. Remove the tough outer layers and use only the tender lower portion—it’s where all the citrusy, aromatic magic lives. For the pork, a center-cut loin ensures even cooking and maximum tenderness. Buy it whole and trim any excess fat yourself for the best texture.

Out of lemongrass? Lemon zest plus a splash of lime juice gets you close but not quite the same. No fish sauce? Soy sauce with a pinch of salt works in a pinch, though the depth won’t be identical. For the brown sugar, coconut sugar adds a nice caramel note. If shallots aren’t available, red onion is a fine substitute—just use half the amount since it’s stronger.

The marinade keeps in the fridge for 2-3 days if you want to prep ahead. Cooked pork stays juicy for 4-5 days refrigerated or freezes beautifully for 3 months. Always let the meat rest for 10 minutes after grilling to lock in those juices.

Step-by-Step Instructions for Lemongrass-Marinated Grilled Pork Loin

This method guarantees a tender, aromatic pork loin with authentic Vietnamese flavors every time.

Step 1: Prepare the Lemongrass Marinade

Finely mince the tender inner parts of the 3 whole Fresh Lemongrass Stalks. In a bowl, combine the minced lemongrass with the 3 tbsp Fish Sauce, 2 tbsp Brown Sugar, 5 cloves Garlic Cloves (minced), 1 whole Shallot (minced), 2 tbsp Fresh Lime Juice, 1 tsp Black Pepper, and 1 tsp Kosher Salt.

Whisk the mixture until the brown sugar fully dissolves. This creates a fragrant, balanced marinade that deeply penetrates the pork. The lime juice brightens the fish sauce’s saltiness while the lemongrass adds its distinctive citrusy aroma.

Step 2: Marinate the Pork Loin

Pat the 2 lb Pork Loin dry with paper towels. Rub the marinade all over the pork, ensuring every surface is coated. Place it in a resealable bag or shallow dish and refrigerate for at least 2 hours, or preferably overnight.

I always let it marinate overnight for maximum flavor infusion. The acidity from the lime juice begins to tenderize the meat while the fish sauce and aromatics work their way into the fibers. Turn the pork occasionally to ensure even marination.

Step 3: Grill the Pork to Perfection

Preheat your grill to medium-high heat. Lightly oil the grates with some of the 2 tbsp Vegetable Oil. Remove the pork from the marinade (reserve the marinade) and grill for 6-8 minutes per side, or until the internal temperature reaches 145°F.

Baste the pork with the reserved marinade during the first few minutes of grilling. This builds layers of flavor and creates a beautiful glaze. Watch for the edges to caramelize slightly—that’s when you know the sugars in the marinade are doing their work.

Step 4: Rest and Slice the Pork

Transfer the grilled pork to a cutting board and let it rest for 10 minutes. This allows the juices to redistribute throughout the meat, ensuring every slice stays moist and tender.

Slice the pork against the grain into ½-inch thick pieces. Serving it this way shortens the muscle fibers, making each bite more tender. The pork should be juicy with a slight char on the outside and a beautiful pink center.

Step 5: Serve with Fresh Garnishes and Jasmine Rice

Cook the 1.5 cups Jasmine Rice according to package instructions. Garnish the sliced pork with the 0.5 cup Fresh Cilantro, 0.25 cup Fresh Mint Leaves, and 3 whole Green Onions (thinly sliced).

The fresh herbs add a bright, aromatic finish that complements the rich, savory flavors of the pork. Serve the pork over a bed of jasmine rice to soak up all the delicious juices and marinade. This combination delivers the authentic taste you’re aiming for.

Troubleshooting Perfect Results

Uneven Cooking

If you notice one end of your pork loin cooking faster, it’s likely because the cut isn’t uniform. I always trim the loin to an even thickness before marinating. For consistent results, aim for a 2-inch thickness throughout. 🌡️

Dry or Tough Pork

Overcooking is the main culprit here. Use a meat thermometer and pull the pork at exactly 145°F internal temperature. Also, let it rest for the full 10 minutes after grilling to retain juices.

Weak Lemongrass Flavor

This usually means the marinade didn’t penetrate enough.

Marinade Burning

Sugars in the marinade can burn if the grill is too hot. Keep your grill at medium-high heat and baste only during the first 2-3 minutes of cooking. Move the pork to a cooler part of the grill if you see excessive charring.

Pork Sticking to Grill

A well-oiled grill and patience are key. Oil your grates thoroughly with vegetable oil and don’t move the pork for at least 3-4 minutes per side. Let it develop a good sear before turning. 💡

Lack of Caramelization

For that beautiful glaze, make sure your marinade has enough sugar. The 2 tbsp brown sugar in the recipe should be plenty. If needed, brush a little extra on the pork during the last minute of grilling.

Frequently Asked Questions