Like turtle's blood and penis, deer penis is one of the "delicacies" served in large jars in Snake Alley , Taipei .  It is also served on the Chinese mainland in restaurants such as the Guo Li Zhuang .  Deer penis wine can be sold at $12 a glass and often as high as $455 for a two-litre bottle.  Deer-antler wine, known as Lurongjiu , is also said to enhance sexual potency in men and to have a warming effect, aiding the joints.   A deer's penis, turtle's penis, or bull's penis is consumed in restaurants and is known in Singapore to be offered as a soup delicacy.