My Favorite Grilled Chicken Ever

Combine vinegar, water, butter, Worcestershire sauce, garlic salt, black pepper, sugar, and minced garlic in a large pot; bring to a boil. Cool marinade to room temperature, at least 30 minutes.

Pour marinade into a resealable plastic bag. Add chicken leg quarters and breasts; coat with marinade, squeeze out excess air, and seal the bag. Marinate in the refrigerator, 8 hours to overnight.

Preheat an outdoor grill for medium-high heat and lightly oil the grate.

Remove chicken from marinade and shake off excess; discard remaining marinade.

Cook on the preheated grill until chicken is no longer pink at bones and the juices run clear, 30 to 45 minutes. An instant-read thermometer inserted near, but not touching, bones should read 165 degrees F (74 degrees C).