Preheat your oven to as high as it goes, mine says it heats to 275°C (500°F). Heating from below only.
Trim and tie the pork lion, depending on the length of your roasting pan leave it whole, or cut in half.
In a bowl just large enough to hold the loin of pork, chop finely all the herbs and add all the above ingredients and combine well. Add the pork lion, turning occasionally and allow to marinate for at least 2 hours.
In a roasting pan place the pork and the marinade. This can be used as a sauce for the pork once cooked.
Roast uncovered at 275°C (or 500°F) for 20 - 25 minutes. Not a minute longer. Remove from the oven and place on a cutting board. Allow to rest for about 10 minutes and cut in slices on the diagonal about 1.5 centimeter thick (or 1/2 inch).