Adobo is a Filipino cooking method that includes vinegar, soy sauce, garlic, pepper and bay leaf.
Adobo in Spanish is a marinade or seasoning mix. Meat that has been seasoned with adobo mix is described as being adobada.
When the Spaniards arrived in the Philippines, they saw a native cooking process that involved vinegar. They referred to it as “adobo.” And eventually even Filipinos began using the term.