The world's strongest coffee
A New York man is marketing the world's strongest coffee - under the brand name of Death Wish Coffee.
Double the strength of an espresso, Death Wish Coffee even comes with a disclaimer warning drinkers to expect 'many sleepless nights'.
Mike Brown, the man behind the blend, used to work in a small coffee shop in New York, but got fed up with customers asking for stronger coffee.
"I always had customers coming in asking for our strongest and boldest roast," he said.
"I had to go through the process every day of explaining to them that dark roasts were actually the least caffeinated.
"This began my journey for finding and roasting the Death Wish bean and after many trial and error processes I found it.
"The type of blend, bean and roasting process we use makes Death Wish Coffee the strongest in the world.
"Its actual process is a secret because we have created something revolutionary and we do not want it stolen."
The extra-strong coffee is available to buy on Amazon and can be bought in packs of either ground coffee or whole beans.