What is the blue mother alchol drink?

There's no such thing as a "blue mother alcohol drink." It's likely you're thinking of something else.

Perhaps you're thinking of:

* Blue Curaçao: A blue-colored liqueur often used in cocktails.

* Blue Hawaiian: A cocktail that's often blue due to the use of Blue Curaçao.

* Blue Raspberry Vodka: A flavored vodka that's often blue in color.

Could you clarify what you're looking for? Perhaps you could describe the drink further or give some more details.