Not everyone makes a big deal about char â€” the burn inside new white-oak barrels used to ageÂ bourbon. But only a No. 4 â€śalligatorâ€ť char, the deepest available, can produce our bourbonâ€™s signature amber color and bold flavor. Others might be content with a No. 1, 2 or 3 char; but itâ€™s something we can never compromise.