The Twosome Foursome is four pairs of golf-ball-sized truffles: hazelnut, amaretto, chocolate and chocolate-covered orange cream.

The Caillers and Peter eventually merged with the operation of Charles-Amédée Kohler (the inventor of hazelnut chocolate) to form the firm of Peter, Cailler, Kohler.

The candy is better known as a hazelnut sandwich with a thick layer of hazelnut chocolate with tiny chunks of hazelnut throughout and in between two crispy chocolate wafers.

Gianduia is named after the Italian hazelnut chocolate.

Waldensian companies dominated Turin's chocolate industry for the latter half of the nineteenth century and are generally credited with the invention of gianduja (hazelnut chocolate).

Gianduja, a type of Italian hazelnut chocolate.

Flavours - spatula'd, not scooped - include gianduia torinese (hazelnut chocolate from Turin) and zabaione, made from egg yolks, sugar and sweet Marsala wine, along with the more usual peach, pistachio and poire William.

In ca. 1830 he invented a hazelnut chocolate, still produced in the form of a drink, and opened a chocolate factory in Lausanne in the same year.