Mix together all ingredients in a bowl and pour over pork loin. Ideally, do this a few hours in advance or the night before so pork can marinate.
Place pork in a roasting pan and roast at 400 °F. for 20-25 minutes until the thickest part of the pork loin registers at least 145 degrees F. Flip the pork every 10 minutes and baste with any marinade in the pan.
Remove pork and let rest.