From hotpot restaurants that only serve animal penis - with a side of testicles - to shots of snake blood, Asia boasts many supposed libido-boosting remedies that may seem unusual, and even repulsive to the uninitiated.

Holding aloft a half-metre long horse penis, chef Xiao Shan confidently declares it "the most delicious" of the ingredients in a Chinese hotpot of male genitalia, one of many supposed Asian remedies to boost the libido.

Penises and testicles from donkey, goat, dog, bull and deer, the other contributors to the $200 feast, are laid out on a kitchen table, like a sorry-looking row of odd-sized sausages and veiny, oval vegetables, all waiting to be sliced up by his looming, intimidating cleaver.

"The (horse) texture and the flavour are both very good. It is also good for one's health," said Xiao, who has been preparing male organs since he was 13, using skills handed down in his family for several generations.

In Pakistan's business capital Lahore, Takatak - a dish whose name is derived from the sound of the clanging knives used to make it - consists of chopped goat and sheep hearts, brains, kidneys and testes.

"Basically men eat it so that they can be potent in bed," said Faher Hayat, a chef whose roadside restaurant serves the specialty with onions, tomatoes, ginger, pepper and coriander.

"The brains give energy to the head, while the testicles have a power of their own."

Sourced from some of Asia's wildest and most rugged terrains, the organs are chopped up before being arranged on a bed of lettuce around an elaborate glass stand, more akin to something that might display fairy cakes or scones in a high-class cake shop.