The caffeine bagel made for Millennials

The 'espresso buzz' bagel is one of a new line of products (Supplied)
The 'espresso buzz' bagel is one of a new line of products (Supplied)

A bagel chain in the US has given its latest creation a shot in the arm, and Millennials are to thank - or blame.

Einstein Bros Bagels has just started selling its 'espresso buzz bagel', which contains 32mg of caffeine - around a third of the amount of a standard cup o' joe.

It promises to help "energise your morning", but in reality you'll need to eat a fair few to get the same buzz as a traditional espresso.

It comes with a somewhat obvious warning: "Drinking a caffeinated beverage with our bagel will result in higher levels of caffeine consumption."

The company's senior vice president says the product has been brewing for around nine months, and reflects changes in coffee-drinking habits.

"We have watched the coffee category expand and adapt as Millennials converted to coffee drinkers," Kerry Coyne told Fox News.

"We knew our culinary team could deliver that same premium, hand-crafted sensory experience with the beloved category hero of espresso in our best-in-class, fresh-baked bagel."

The caffeine is incorporated into the mix with espresso and a coffee-cherry flour, boasts 13 grams of protein from the cocoa in the batter and 6.5mg of iron.