http://en.wikipedia.org/wiki/Biodynamic_wine
It's worth drinking because you know all the cobblers the wine growing chappies have been through to make it...
Preparation 500 - Cow manure is buried in cow horns in the soil over winter. The horn is then dug up, its contents (called horn manure or '500') are then stirred in water and sprayed on the soil in the afternoon. The horn may be re-used as a sheath.
Preparation 501 - Ground quartz is buried in cow horns in the soil over summer. The horn is then dug up, its contents (called horn silica or '501') are then stirred in water and sprayed over the vines at daybreak. The horn may be re-used as a sheath.
Preparation 502 - Yarrow flowers are buried sheathed in a stag's bladder. This is hung in the summer sun, buried over winter, then dug up the following spring. The bladder's contents are removed and inserted in the compost (the used bladder is discarded).
Preparation 503 - Chamomille, the German chamomile (Matricaria chamomila) flowers are sheathed in a cow intestine. This is hung in the summer sun, buried over winter, then dug up the following spring. The intestine's contents are removed and inserted in the compost (the used intestine is discarded).
Preparation 504 - Stinging nettles are buried in the soil (with no animal sheath) in summer, are dug up the following autumn and are inserted in the compost.
Preparation 505 - Oak bark is buried sheathed in the skull of a farm animal, the skull is buried in a watery environment over winter, then dug up. The skull's contents are removed and inserted in the compost (the used skull is discarded).
Preparation 506 - Dandelion flowers are buried sheathed in a cow mesentery (peritoneum). This is hung in the summer sun, buried over winter, then dug up the following spring. The mesentery's contents are removed and inserted in the compost (the used mesentery is discarded).
Preparation 507 - Valerian flower juice is sprayed over and/or inserted into the compost.
Preparation 508 - Common Horsetail (Equisetum arvense) made either as a fresh tea or as a fermented liquid manure is applied either to the vines (in this case usually as a tea) or to the soil (in this case usually as a liquid manure).
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