Amaretto Sour was devised in the 1970s as a promotion for almond liquor Disaronno, known then as Amaretto di Saronno. Originally it was just two parts amaretto to one part lemon juice. Nowadays it usually includes egg white and bourbon, and all the better for it.
Eggnog
There are two cocktails that say Christmas like no others: Eggnog and Snowballs. Wait until it snows, pour out the eggnog, put Mr. Hankey’s Christmas Classics on the gramophone and empty Santa’s sack around the Christmas tree. Howdy Ho!