The phrase "chocolate hazelnut" refers to a combination of flavors where chocolate and hazelnut are together. It usually describes a food item or a spread that has both chocolate and hazelnut flavors. Full definition
A cast - iron skillet cookie stuffed with chocolate hazelnut spread and sprinkled with flaky sea salt. (flourcoveredapron.com)
The topping is a mixture of chocolate hazelnut butter, dark chocolate, and heavy cream, then it's finished with toasted hazelnuts and a sprinkle of coarse sea salt. (ambitiouskitchen.com)
Place in refrigerator until solid, I left the vegan chocolate hazelnut cake over night and served the other day. (foodformyhealth.com)