Molybdomancy. Molybdomancy (from  and -mancy) is a technique of divination using molten metal. Typically, molten lead or tin is dropped into water. It can be found as a tradition in various cultures, including Austria, Bosnia and Herzegovina, Bulgaria, Germany, Finland, Estonia, Latvia, Switzerland, the Czech Republic, and Turkey. Some versions have been found to have potentially harmful effects on human health.

Method 
Lead (or more recently tin) shapes are melted in a ladle over a flame, and the molten liquid is then poured into the water. The resulting shape is either directly interpreted as an omen for the future, or is rotated in a candlelight to create shadows, whose shapes are then interpreted. The shapes are interpreted symbolically, for example a bubbly surface signifying money, a fragile or broken shape misfortune. The shape of the lead before melting can refer to a specific area of one's life. For example, ships for traveling, keys for career advancement, etc.

Finland
In Finland, the tradition is to tell the fortunes on New Year's Eve by melting "tin" in a ladle on the stove and throwing it quickly in a bucket of cold water. The practice is known as . Shops sell ladles and small bullions in the shape of a horseshoe for this express purpose. The shapes are often interpreted not only literally, but also symbolically: a bubbly surface refers to money, a fragile or broken shape misfortune. Ships refer to travelling, keys to career advancement, a basket to a good mushroom year, and a horse to a new car.

Originally made from lead and tin, since 2018 the bullion have been mostly made from lead free tin, after Tukes (Safety and chemicals agency) banned the use of lead in "uudenvuodentina".

The world's largest , , was cast by members of the Valko volunteer fire department in Loviisa, Finland, in New Year 2010.

Germany, Austria, and Switzerland

 (literally "lead pouring") is a traditional activity held at the New Year to predict the fortune of the coming year. The different resulting shapes are identified based on their resemblance to any of various objects, animals, and structures, each with its own interpretation. EU regulations passed in 2018 limit the sale of toxic lead-containing products, including molybdomancy kits. Alternatives involve dripping molten wax or tin rather than lead into water.
In the Czech Republic molybdomancy is one of the traditional Christmas traditions.

Turkey
The tradition of molybdomancy is called  in Turkish (literally, "lead casting", "lead pouring") which is intended to help with various spiritual problems or predict the future. The rituals vary, but they involve pouring molten lead into water. Researchers from Ankara University performed a study of the effects of this tradition on the health of women. They reported risks of antimony poisoning and lead poisoning.

A similar traditional practice is used in Bosnia and Herzegovina.

Jewish folk medicine
In Yiddish folk medicine, the segula of  () involves a medicine-woman reciting a psalm or an incantation, and then throwing molten lead into a vessel full of water. It is used for divination or the removal of the evil eye. Traditionally, it was resorted to in cases in which illness of pregnant women or that of children is due to fright, to find out what object was the cause of the alarm; from the resemblance of the form assumed by the metal to a particular animal, a medicine-woman divines that the cause of fright was a cat, a dog, a horse, and so on.

See also
Ceromancy, divination using molten wax rather than metal
Methods of divination

Notes

References

Divination