Trim excess fat off of pork shoulder steaks. If uneven, pound to even thickness without thinning.
Combine all ingredients for marinade in a medium mixing bowl or freezer bag. Add pork shoulder steaks. Coat evenly. Refrigerate for 4 hours to overnight.
Preheat grill over medium high heat. Oil grates using a dish cloth or paper towel.
Once hot, add pork shoulder steaks to grill. Cook for 5-7 minutes. Flip, and cook an aditional 5-7 minutes or until internal temperature reaches 145°F (for medium).
Remove from heat. Rest the pork steaks for 7 minutes, covered loosely with aluminum foil to retain heat.
Notes
Don't move the pork shoulder steaks while grilling, to ensure the grill marks are consistent.Cook to 145°F for medium rare, 150°F for medium, and 155°F for medium well.Always use a meat thermometer when cooking pork shoulder steaks.