Ours actually could have used another 30 minutes or so of cooking. The sauce was delicious, even though I forgot the vinegar, but it didn't thicken up the way we'd hoped. It sure did taste good, though. Thanks for posting!
This had a decent flavor, but I'm not sure about the effect of the vinegar. May try again without to compare.
My two guys had this pot roast tonight. They thought it was very good "but strange". I did it in the slow cooker also (from 12:30 to 6:00pm) and it was very tender and smelled wonderful. I forgot to add the vinegar and I don't know if that hurt their rating or not. It was on the counter but somehow didn't get into the gravy. Thanks Mikekey, 4 stars from those 2 is a top mark!
Oh wonderfully tender! I placed this in my crock for 4 1/2 hours on low and it was yummy! Seasoned the meat with my seasoned salt mixture. I skipped the broth and olive oil. 15 minutes before serving I added the flour and butter stirring in then added the vinegar.