Choose chops with a similar thickness
The cooking time depends more on thickness than weight. If one chop is much thinner than the others, it may become dry before the thicker pieces are ready.
Flatten unusually thick areas slightly or remove thinner chops from the grill earlier.
Let Sprite and calamansi work together
Sprite can contribute to tenderizing because it is acidic, but the carbonation itself is not doing most of the work.
Its acidity, the calamansi, soy sauce, salt, and time in the refrigerator work together while the sugar contributes flavor and browning.
Keep the pork refrigerated while marinating
Place the pork and marinade in a covered container or sealed food-safe bag and keep it refrigerated.
Four hours gives the pork good flavor, while an overnight marinade produces a deeper result. Avoid leaving it at room temperature during marination.
Reserve the basting portion first
Measure and remove ½ cup of marinade before adding the raw pork.
Once marinade has touched raw meat, do not use it directly for basting cooked pork. Discard the used marinade after removing the chops.
Let the excess marinade drip away
Wet pork cools the grill surface and can prevent proper browning. Excess liquid and sugar can also fall onto the charcoal and create flare-ups.
Lift each chop from the marinade and let the excess drip away before placing it on the grill.
Build a controllable charcoal fire
Arrange the charcoal so you have a hotter area for browning and a cooler area where the chops can finish cooking.
If the outside is darkening too quickly, move the pork away from the strongest heat instead of repeatedly flipping it over the same hot spot.
Give the pork time to brown
Place the chops on the grill and allow the first side to develop color before moving them.
If the meat sticks strongly to clean, oiled grates, it may need a little more time before it is ready to release.
Apply the baste in thin layers
Thick amounts of sauce can drip into the fire or burn before the pork is cooked.
Brush on a light layer after the chops have started cooking, then repeat in thin coats as they are turned. Allow each layer to caramelize without becoming black or bitter.
Watch the sugar and banana ketchup
Sprite, brown sugar, and banana ketchup all encourage browning. This gives the pork its glossy exterior but also makes it easier to burn.
Use medium-high heat and move the chops to a cooler section whenever the glaze darkens faster than the meat cooks.
Check the thickest part
Grill marks and surface color do not reliably show whether the center is ready.
Insert a thermometer into the thickest part without touching the bone. Remove the pork when it reaches approximately 63°C, then let it rest for at least three minutes.
Rest before serving
Place the grilled chops on a clean plate and allow them to rest before slicing or serving.
This gives the temperature time to settle and helps the juices remain inside the meat.