Prep and Remove Silverskin: Rinse the rib racks under cold water and pat dry with paper towels. Place a rack vertically on your cutting board, bone-side up. Slide your finger or using a butter knife under the white membrane (silverskin) at one end to loosen it. Using a paper towel for grip, grab the membrane and peel it completely off the rack. Repeat for the second rack.
Slice the Ribs: Using a sharp knife, slice between each bone to separate the racks into individual rib pieces. Place the cut ribs into a large mixing bowl.
Make the Marinade: In a medium bowl, whisk together the minced garlic, minced lemongrass, dark brown sugar, fish sauce, apple juice, and sake (if using). Pour the mixture over the ribs and toss well to ensure every piece is thoroughly coated.
Marinate: Cover the bowl with plastic wrap and refrigerate for at least 2 hours, or up to 24 hours for maximum flavor and tenderness.
Preheat the Grill: Preheat your outdoor BBQ or indoor grill to 350°F (177°C).
Grill the Ribs: Place the ribs on the hot grill, meat-side down. Grill for 10 minutes. Flip the ribs and grill for another 10 minutes. Continue flipping and repeating this process until the ribs are golden brown and slightly charred.
Check Temp and Serve: For doneness, use a meat thermometer (ensuring you do not touch the bone) to check that the internal temperature has reached 145°F (63°C). Serve hot over a bed of rice with stir-fried green beans or your favourite side!