The Deep Flavor Infusion
In a large non-reactive bowl, whisk together the soy sauce, cane vinegar, minced garlic, half of the coarsely crushed peppercorns, and the bay leaves. Submerge the chicken thighs in this mixture, ensuring they are completely coated. Cover and refrigerate.
Marinating forces the salt and acid deep into the chicken muscle tissue, preventing a bland interior profile.
The chicken skin and meat will absorb a light brown tint from the soy sauce.