What drink you made from lily?

Answer 1

It's almost impossible to tell what sort of plant people might try to make tea from. It's certainly possible to buy lily flower tea.

Looking at other answers on the site, I suspect that whoever posed the question had the answer "tequila" in mind, but this is wrong (well, except in the sense that any drink made from plants could technically be said to be made from "a relative" of the lily ... it doesn't specify a CLOSE relative). By this definition, "Pineapple Juice" and "beer" are about equally valid answers.

Tequila is made from the agave cactus. The agave was formerly placed in family Liliaceae based on some similarity of morphology, but it's now recognized that the lily family had historically been used as a kind of a "catch-all" group of plants that were not at all closely related (basically, all monocots with petals that weren't obviously members of some other family), so many species formerly considered part of the lily family have now been moved into other families (in many cases, these families are not even in the same order as lilies, to give you some idea of how overbroad the former definition was). The agave is now in family Asparagaceae, more closely related to the asparagus than to the lily.

Answer 2

The drink that is made from the relative of the lily is tequila