A chocolate firm says they've created a fourth type of chocolate after milk, dark and white - the first new type in 80 years.

Swiss chocolate giant Barry Callebaut says it used the ruby cocoa bean to create a confectionery with “berry-fruitiness and luscious smoothness”.

The new sweet, named Ruby after its characteristic red hue, is only the fourth ever type to be created since the white version in the 1930s - according to the firm - which hopes it'll be a hit among chocoholics and foodie millennials alike.