My sister-in-law doesn't cook much, though she has a huge recipe box filled with all kinds of interesting dishes that she's hijacked from various friends and family members. A while back I came upon a recipe of hers called "chicken adobo." It was super easy to make. You simply saute an onion, some garlic then throw in some chicken to brown a bit. After that you add half a cup of water and then 15 minutes later you add half a cup of white vinegar. After another fifteen minutes you add half a cup of soy sauce and then after 30 minutes you add a bit of sugar and pepper. Pour it all over white rice and you've got yourself an incredibly flavorful and easy go-to meal. She told me that it's Filipino. I grew up with some Filipino friends and I fondly remember going to their homes for lumpia and panset, but I don't ever recall eating chicken adobo. Is it an authentic Filipino dish?