Bulk/cheap gelatin (around Waltham area)
I recently got a stand mixer and am in love with making marshmallows from scratch! However, it seems pretty uneconomical to keep buying little packets from Shaws. Is there anywhere around here that sells gelatin in bulk (I've looked in Whole Foods and Trader Joe's), or inexpensively? I live in Waltham but am out and about in Cambridge/Boston a lot.