This is a spell to create a rainstorm, found in Ye Olde Spell Booke in King's Quest VI.
The ingredients for the spell are as follows.
First mix Salt and Sacred Waters in a Teapot, then add Falling Water. Speak incantation over Teapot to enchant. Heat to boiling to activate.
Clouds of thunder,
shafts of light.
Come and sup with
Waters three have
I for tea.
Brew a tempest
now for me!
The spell's definition of "Teapot" is somewhat loose, as Alexander uses an old hunter's lamp as a substitute.