I swear I posted this earlier today, but I don't see it, so here goes again: I'm making a jam later tonight that calls for demerara sugar. I don't have enough on hand and would like to avoid a run to the store. Can I use white granulated sugar or light brown sugar instead and what's the equivalent volume? A couple of sites I've looked at say there's a one-to-one equivalence for white and demerara (turbinado, which I assume is more or less the same), but demerara has larger crystals, so I question whether this is the case. Does anyone know what the equivalence is? Thanks!