Prisoner's Honey

Prisoner's Honey is the preferred drug of the Neath, discovered on the Surface but now far more popular below ground. It's made from a flower called "exile's rose" pollinated by the lamplighter bee. Eating the honey physically transports the user into that mystical alternate world called Parabola.

The drug is popular among bohemians, who meet in "honey parlors" to find artistic inspiration in the dreamlike realm, or to experienced heightened sensual pleasures. Habitual users can become addicted, as well as susceptible to returning from a trip too early. These "honey-mazed" people are physically present in reality, but their minds and senses are still in Parabola until the drug fully wears off. The honey-mazed are not uncommon on the streets of London, stumbling around unaware of their surroundings and reciting nonsense.

Xenophon, an ancient Greek writer, wrote of prisoner's honey (he called it mad honey), but the effects on his Surface soldiers resemble honey-mazing more than honey-dreams.

The Devils created Prisoner's honey on behalf of the Fingerkings, so people would be able to visit Parabola. As part of this deal, the Fingerkings owe the Devils 1/5 of everything they gain.

Gaoler's Honey

Gaoler's honey is colloquially called red honey, because, well, look at the illustration. This is a more sinister breed, whose consumption allows one to experience another's memories - which is incredibly painful for the unfortunate victim. It's made from a flower that is a cross between the exile's rose and a flower from Hell, pollinated by bees that have crawled through a victim's brain. It seems the hybrid has existed since the days of the Fourth City. The name likely refers to the practice of capturing prisoners in order to harvest their minds for this valuable drug.

Red honey is hellish for sure... (FATE SPOILERS)
It's said that a contaminated batch made the Empress's children into monsters. (See The Shuttered Palace and the Empress's Court for more info.)

Ambition: Nemesis
Those seeking their murderous rivals may prepare and take a drop of this honey, and be transported into the "Chambers of the Heart" — that is, the memories of the person the honey was made from. The consumer picks and chooses from intense, pleasurable snippets of memory, but also senses the distant victim screaming and pleading from the pain this causes.

Gaoler's Honey Across the Zee

The red honey that is not gathered in Hell is produced on the Isle of Cats by the Pirate King, Leopold, who himself is a honey addict - in fact, the first honey-addict in centuries. The people whose memories are used to create the honey are kept locked in cages, and are almost comatose due to the amount of pain they are experiencing. It is said that if a person's memories are used to create honey, but they escape and drink the honey containing their memories, they will be mostly fine (though they may still have some memory issues). Several important figures across the zee are implied to be addicted to honey.