Finally got a good opportunity to break open the bag. Most pieces seem to be 3-5", pretty easy to fill a chimney. It did seem to be a little harder to light than B+B natural lump, and definitely had what I consider to be a an unpleasant aroma while lighting it off. Fortunately, that did not come through in the cauliflower I roasted, and the top sirloin I grilled for dinner. It started with a nice hot fire, and the cylindrical pieces did make it easy to arrange on the charcoal grate for an even fire. It did burn down rather faster than I expected.
Aside from the unpleasant aroma, it seemed to burn at least okay. I was hoping for a little longer burn. I will have to try this in my smoker.
Bringin' this back around, now that I've gotten back out to the grill tonight.
This stuff leaves ash like briquettes, several times as much as natural lump. It did burn out completely, there weren't any bits left over to dump back into the chimney starter. This second burn also was difficult to start.