Have you ever wondered where Nutella® came from? According to the folks who make Nutella®, in the 1940s, when cocoa was in short supply due to World War II,
Add all the ingredients to a blender in the order listed (adding the hazelnuts last) and blend until smooth and creamy. Stop to stir and scrape down sides periodically. Store in an air-tight glass container for up to a month in the refrigerator.