it's not whiskey you idiot.
And the very fact that this liquor would need to have this disclaimer on wikipedia:
"Contrary to an urban legend, it does not contain deer or elk blood.
[2]"
means it's AWESOME
It is an herbal liqueur; all liqueur's usually have as their base either vodka or whiskey.
Jagermeister has 56 ingredients, which are a combination of roots, herbs, flowers, fruits, barks and other forms. A proportion of the ingredients can be viewed at the distillery, others can be guessed at, but the recipe is a strongly guarded secret. In the stores at Wolfenbutel there is a room containing the most secret ingredients, the ordering, delivery and handling of which is strictly limited to two or three people. I am aware of a number of the important ingredients, but bear in mind some of these plants may feature as flower or seed or root, or a combination thereof. I am fairly sure of these:
Ginger, orris, galengal, lovage, chiretta, angelica, elecampane, hyssop, pomerance, camomile, lavender, coriander, pepper, cloves, star anis, allspice, nutmeg, cardamon, fennel, bitter orange, rose hips, quinine, licorice, tumeric, mace, saffron.
These are possibles: marshmallow, yarrow, burdock, curcuma, grains of paradise, cubeb, wintergreen, cassia, betony, purslane, borage, sandalwood.
Deer blood is a myth. Caramel is used as a sweetener. Your real problem is getting the proportions right.