Lambs-Wool

"The pulpe of the roasted apples, In number foure or five, according to the greatness of the apples, mixed in a quart of faire water, laboured together untill it come to be as apples and ale, which we call "lambes-wooll". -Thomas Johnson's Gerard's Herball, 1633

I received a desk calendar for Christmas from an English friend "Forgotten English" which each day reveals the roots of a forgotten English word. Today is "lambs-wool" which is evidently a mixture of roasted apples and ale.