Preheat a grill to medium-low.
Press 1 garlic clove on each chicken thigh and rub in. Combine the butter, salt and ground bay leaf into a paste.
Place the chicken, skin side down in the pan. Cook for 7 minutes, turn over and baste with the butter mixture. Continue to cook for another 7 minutes, turn over back to the skin side and cook for 7 minutes more. Turn over again and cook for a final 7 minutes. Remove thighs to a large serving platter and serve with the Vinaigrette Salsa.
Combine all ingredients in a medium bowl and stir well to combine. Allow to sit at room temperature for at least 1 hour before serving.