While the sauce is reducing, transfer the chicken thighs, skin side up, to a foil-lined sheet pan. Brown the chicken thighs underneath the broiler for 3–5 minutes.
Use freshly ground black pepper instead of whole peppercorns.
For a “drier” chicken adobo, you can reduce the sauce until it is almost completely evaporated. The chicken will then begin to fry in its own fat that is still left in the pan. This is how my grandmother finishes her adobo.
For a saucier adobo, double the amount of soy sauce and vinegar.
To make this adobo as an appetizer, use 2 lbs (1 kg) of chicken wings instead of thighs.