Arriving at the church, Deacon Margaret Wibbly's first task is lighting the brazier to produce the charcoal for the 12 golden thuribles that encircle the chancel. She adopts an attitude of prayerful crouching as she gently blows the hot nuggets into life, unaware that her perfume that morning contains 89% pure methylated spirit, and that she is about to experience rather severe flash burns to her cheeks.