I'm sure this has been a past subject on this forum but the search function didn't yield me the info I was looking for. I have some black walnut with nearly white sapwood that gives a great contrast to the heartwood. I 'typically' finish my bowls with walnut oil but the oil yellows the sapwood fairly significantly. I have little experience with other finishes so I'm looking for advice on a clear finish that would not yellow the sapwood. Thanks