Sugar with vegetable oil safe? During my move to a new home a 10lb bag of granulated pure cane sugar had some vegetable oil drip onto it. After 2 days when I observed that I took the sugar out of its paper bag and put it into a large zip-lock plastic bag that appears to be airtight. Is the sugar safe and for how long? How can I tell if it goes bad?
I don't see a safety risk.  Oil can go rancid.  That is a quality issue, rather than a safety issue.  Moist sugar could potentially mold, I suppose.  If you see mold forming I would discard.  Otherwise, this seems like a low risk situation to me.