So far I have found this list
Regulas nectars
- apple nectar (skill level 1): 3 apples
- grape nectar (1): 3 grapes
- strawberry necater (2): 3 strawberry
- potato nectar (2): 3 potatoes
- prairie grass nectar (3): 3 prarie grass hay
- trash nectar (3): 3 trash fruit
- energy nectar (4): 2 lemon, 1 any herb
- fruit nectar (5): 3 any fruit
- berry nectar (5): 3 any berry
- vitality nectar (5): 1 death flower, 2 spinach (can be used to revive ghosts)
occult nectars
- plasma nectar (4): 3 plasma fruit (only available for vampires, raises thirst and vampiric energy a little)
- valerian nectar (4): 3 valerian roots (only availabel for spellcasters, lowers spellcaster charge)
- moonpetal nectar (4): 3 moonpetals (only available for werewolves, apparently no effect on fury)
The effects on occults come from a video of englishsimmer about cross pack compatibility. If someone has any additions or corrections, please let me know. The more a nectar has ages, the more effect it might have.