1) Position a rack closest to the grill and preheat to high.
2) Combine the coriander, garlic powder, and ginger. Brush the tenderloins with the oil and rub all over with spices. Season with salt and pepper, to taste. Lay the pork on a small shallow pan and grill until golden, turning once, about 5 minutes per side. (An instant-read thermometer should register 55C when inserted into the thickest part of the meat.)
3) Meanwhile, for the sauce: whisk the syrup, vinegar, hot sauce, and salt together in a small bowl. Set about half the sauce aside. Generously brush the tenderloins all over with the remaining sauce.
4) Return the tenderloins to the grill and cook, turning once, until a deep rich brown, about 2 to 3 minutes.
5) Remove the tenderloins from the grill and set them aside for 5 minutes to rest before slicing. Serve with reserved sauce for drizzling over the meat.
Cook's Note: Be sure to remove the silver skin before cooking the tenderloin; otherwise, the meat will curl.
To remove the silver skin:
1) Lay the tenderloin on your work surface and slip a sharp knife under the surface of the silver skin. Keeping your knife flat against the meat, make your first cut by slicing away from you and toward the end of the tenderloin.
2) Lift the unattached portion of the silver skin up and place your knife at the point where the skin meets the tenderloin. Slice to separate.
3) Continue moving down the length of the tenderloin, pulling and slicing until the silver skin is completely removed.