I did a search for "Portuguese Recipes" and found numerous links to different recipe sites. I went to the most logical one listed on the first page - Ana's Portuguese Cooking and found a pork and vinegar dish there which may actually be what you are searching for. It is not the name/spelling that you posted, but I could see how it could be mispronounced and misspelled in translation.
I do not want to post the recipe here since it is a copyright on that site, but here is the address - http://www.portuguesecooking.com/re...ha_dalhos.
If this sounds like what you are ISO, you can then search for other variations elsewhere with the name given on Ana's site; let us know if you need additional help.