This is by far the most famous and most popular of all Filipino dishes. But every Filipino cook has his or her own version. The most popular ratio of soy sauce to vinegar in adobo is 1 to 2. It may seem like a lot of vinegar, but the long cooking time (at least 1 hour) mellows the tang of the vinegar and the chicken ends up falling-off-the-bone tender. The Instant Pot® definitely speeds up this process.