It has come to my attention that white sugar from cane is not always vegan. According to PETA, some manufacturers filter their sugar through charred cattle bones. For any Jews reading this, I would think this would render the sugar non-pareve as well. Bone-char is not used in the refining of beet sugar.
The following brands of cane sugar DO NOT use bone-char: Florida Crystals, Jack Frost, Country Cane, 4# Flow-Sweet, Pillsbury, Supreme, Southern Bell, and Rouse’s Markets.
The following brands of cane sugar DO use bone-char: Domino, Savannah Foods, and C&H.
[Edit: This post was recovered from my old Exploring Veganism blog. Veganism ultimately proved to be an inappropriate approach for me.]