and The Dude is buying White Russian mixer

It’s moloko plus… milk plus vellocet, synthemesc, or drenkrom. The latter of which will sharpen one up for a bit of the old ultraviolence

Either was Milkbar Moloko.

There are three types of Moloko plus served within the Milk Bar; vellocet (mixed with most likely amphetamines), synthemesc (mixed with synthetic mescaline) and drencrom (mixed with adrenochrome and possibly unnamed hallucinogens)

Although the 3rd one wouldn’t do much of anything without the “unnamed hallucinogens.”