Maxxx elevates the BBQ briquette to a bigger, better fuel. Maxxx briquettes contain no fillers, chemicals or toxic mystery ingredients that produce bitter smoke and mountains of ash. So what is in them? The same incredibly dense hardwood we use to make our lump charcoal plus a pinch of plant derived starch (that is it yes, really). We compress it into the biggest pillow briq on the market for the longest burn time on the market and put it in a cool water-proof resealable bag.