Wiktionary
tasseography
n. divination with tea leaves.
Wikipedia
Tasseography
Tasseography (also known as tasseomancy or tassology) is a divination or fortune-telling method that interprets patterns in tea leaves, coffee grounds, or wine sediments.
The terms derive from the French word tasse ( cup), which in turn derives from the cognate Arabic word tassa, and the Greek suffixes -graph (writing), -logy (study of), and -mancy (divination).
Divination attempts to gain insight into the natural world through intuitive interpretation of synchronistic events.