Make Brine

1. Combine all ingredients for the brine in a large pot and bring to a full boil over medium heat, making sure salt and sugar are dissolved
2. Remove from heat and cool completely

Brine Ham

1. Combine brining solution and ham in a pot or container large enough to hold the ham and let it submerse in the brine
2. Cover and brine in the refrigerator for a minimum of 12 hours (overnight) to 2 days

.Rinse & Ready Ham for Roasting

1. Preheat oven to 450°
2. Remove ham from brine and rinse thoroughly. Pat dry with paper towels. Discard the brine.
3. Using a sharp chef’s or paring knife, score the ham carefully, making crosshatch slices, cutting just through the skin and layers of fat to the flesh underneath about 2" apart. It should look like diamonds when you’re done
4. Place ham, skin side up, on a rack in a foil-lined roasting pan
5. Place in preheated oven and roast for 25-30 minutes. The skin should start to get brown and crispy

Roast, Glaze & Serve

1. While the ham is roasting for the first 25-30 minutes, prepare the glaze by placing orange juice, dark brown sugar, tamarind paste, chili paste, mustard, soy sauce, honey and garlic in a small saucepan
2. Bring to a boil, then turn off heat and let cool; mixture will not thicken but that is what you want
3. After the initial 25-30 minutes of roasting the ham, lower the oven temperature to 350° and continue roasting
4. After a total roasting time of 1 hour, begin to baste the ham with the tamarind glaze using a pastry brush, every 15-20 minutes. Roast until the internal temperature of the ham reaches 145°F using a meat thermometer (the exact time will vary, based on your individual oven and the weight of the ham)
5. Remove from the oven and tent loosely with foil
6. Allow ham to rest for 25-30 minutes (while the internal temperature continues to rise and juices redistribute). Then slice and serve