Bain-marie
Alternatively, the device's invention has been popularly attributed to Mary the Jewess, an ancient alchemist traditionally supposed to have been Miriam, a sister of Moses. However, according to The Jewish Alchemists, Maria the Jewess was an ancient alchemist who lived in Alexandria, which would seem to contradict the tradition that she was Moses' sister: Alexandria was founded by Alexander the Great in 334 BC, while Moses is thought to have lived around 1450-1200 BC.