Dwarves who reach XL7 should get a favorite beverage. Like Draconians, this should be random, not a choice, It should have a significant effect on gameplay.
possible choices include:
Orcish Glibber - The strongest, most pungent alcoholic beverage, those with a taste for it are tougher, and their systems are immune to poison and nausea.
Moradin's Holy Water - Typical Dwarven Ale, but being holy, grants immunity some types of necromantic magics to those who prefer to drink it.
Elven Wine - Usually only preferred by the most fabulous of dwarves, this light, but still alcoholic beverage gives you a light floaty warming feeling, and those who prefer it gain one level of cold resistance, and an EV bonus.
Spriggan Dizzy Water - Water with grain alcohol in it. Comes in flavors ranging from Watermellon to Whipped Cream, but any dwarf preferring this stuff probably drinks it straight. Gives a slower metabolism, and a heightened sense of self-worth.
Absinthe - Yes, this green beverage made from fermented wormwood exists even here. Those who prefer this hallucinogenic drink get the Demonspawn weak demonic guardian mutation, and the demon always gets recolored to green.
Geryon's Hellish Lager - Served at scalding temperatures, the few dwarves who actually like this stuff are also on fire, and have a perma-ring-of-flames.
Shirley Temple - Someone lied to you. You now distrust everyone and everything around you, and gain Repel Missiles, and Repel Allies.
No, really. This would totally add flavor to the dwarves that they so desperately lack
The above post is for entertainment purposes only. If you think anything I ever say is backed by fact, or if you cite things I've said in any argument ever, you are insane.