How to cook Roast Pork Loin:

• Marinate the pork with the mixture of minced garlic, salt, calamansi juice, pepper and orange marmalade overnight in the refrigerator.
• Wrap the pork in an aluminum foil with the marinade and place on a tray and roast in a preheated oven 350 °F for one hour. (For every kilo of pork you need to roast it for 40 minutes so a 1 1/2 kilo of pork needs 1 hour to cook.)
• Remove from oven and open the foil and roast again for 30 minutes or more until brown.
• To make the gravy; Combine water, beef cubes, soy sauce and drippings from the roasted loin and bring to a boil.
• Make a slurry of 5 Tbsp. cornstarch and 1 Tbsp. water and pour over the boiling mixture to thicken the gravy.
• Slice the tenderloin and place in a platter. Serve with gravy.