Open the garlic packets and squeeze the the roasted garlic cloves into a blender, squeezing the base of each garlic half.
Add the parsley and balsamic vinegar.
Pulse until well blended.
Drizzle or pour the olive oil into the blender and blend well again.
Add the sugar or sugar substitute, salt, pepper, and two Tbsp. of water.
Blend until well mixed.
Drizzle some of the vinaigrette over the pork tenderloin.
Slice into desired thickness of slices.
Pass around the remaining vinaigrette in a small ‘gravy’ type dish.