A unit is the measure of the amount of alcohol in a drink. One UK unit is 10 ml or eight grams of pure alcohol. A typical pint of ale contains one or two units, whilst a glass of wine can contain anything from around one and a half to three units, depending on the size of the glass and the strength of the wine.
What is Absinthe? Absinthe is a strong herbal liqueur which is distilled with a great number of flavorful herbs including anise, often partially substituted with star anise, veronica, fennel, lemon balm, angelica, licorice, hyssop, Florence Melissa, and Roman wormwood (Artemisia Pontiac).
The water is poured over the cube, dissolving it and sweetening the drink. In cocktails and other mixed drinks, owing to its very pronounced anise flavor, absinthe is generally used in much smaller proportions compared to other spirits. In most cases it is used similarly to a bitters, in dashes or as a rinse.