Combine vinegar, brown sugar, salt and all spice in a medium microwave safe bowl.
Microwave on high for 3-4 minutes or until the mixture boils. You can also bring the mixture to a boil in a saucepan on the stove.
Add onions and toss to coat.
Let stand for at least 30 minutes.
Turkey Burgers
Combine the turkey, parsley, cumin, pepper, salt and all spice in a large bowl.
Mix until combined; form mixture into four patties.
Brush patties with canola oil and grill until internal temperature reaches 165 degrees.
Top with cheese and serve on buns.
Notes
Different Oil: There is no need to use Conola oil, try olive oil or avocado oil or any high smoke point oil. Try not to use cooking spray as some grill manufactures do not recommend.
Add your Favorites: Lettuce, tomato, pickles, ketchup or mustard.
Short cut tip: Feel free to add as many tips as you need in this section
Variation tip: Grated onion can be used if you do not want big slices.
Alternate ingredient: A splash of Worcestershire sauce will add a real umami flavor to your lean ground turkey. Or try garlic powder and onion powder for more flavor.
Alternate cooking method tip: Feel free to make these inside with your favorite grill pan.