What is Judge Taylors most "interesting habit"? Why is this so interesting to Scout do you think?

“Judge Taylor had one interesting habit. He permitted smoking in his courtroom but did not himself indulge: sometimes, if one was lucky, one had the privilege of watching him put a long dry cigar into his mouth and munch it slowly up. Bit by bit the dead cigar would disappear, to reappear some hours later as a flat slick mess, its essence extracted and mingling with Judge Taylor’s digestive juices. I once asked Atticus how Mrs. Taylor stood to kiss him, but Atticus said they didn’t kiss much.”