-67- William Hewett's Yarrowee Soap & Candleworks Our re-created soap and candleworks factory - William Hewett's Yarrowee Soap & Candleworks - shows visitors to Sovereign Hill how an 1860's steam-operated plant would have looked. Our candlemaker demonstrates two 19th century mass-production candlemaking techniques, and our box label was adapted from Hewett's original label.