Re: Is it a bearing wall?
It's a diagonal brace added to stabilize the framing. Is it possible that this wall was originally the outside wall and the kitchen was built on. If it was originally an outside wall it is most probably a bearing wall.
Generally if you can look below the wall and it is supported by a beam or is setting on a foundation it is a bearing wall or if there is another wall above it is is a bearing wall.
Be sure you live your life, because you are a long time dead.-Scottish Proverb