Step 1

Toss together pork and lime juice in a large nonreactive metal bowl. Stir together soy sauce, lemongrass, and garlic in a small bowl. Pour over pork; stir to combine. Place in refrigerator; marinate 1 hour.

Step 2

Open bottom vent of a charcoal grill completely. Light charcoal chimney starter filled completely with briquettes. When briquettes are covered with gray ash, pour onto bottom grate of grill. Adjust vents as needed to maintain an internal temperature of 350°F to 400°F. Coat top grate with oil; place on grill.

Step 3

Place pork on oiled grates. Grill, uncovered, until skin is crisp and a thermometer inserted in thickest portion of meat registers 145°F, 5 to 10 minutes.

Step 4

Season grilled pork with salt. Serve with North Sumatran Sambal Andaliman.