“Yes, it’s commonly called paraffin wax. It’s an old-fashioned material, as you probably know. Used to be used for candles, then it was replaced by other sorts of more stable wax.” “My mother uses it for pickling,” said Beauvoir. “She melts it on the top of the jar to create a seal, right?” “That’s right,” said Dr. Harris. Gamache turned to Beauvoir. “And where was your mother on Saturday night?” Beauvoir laughed. “The only one she ever threatens to brain is me. She’s no threat to society at large.”