Preheat oven to 400°F (200°C)
Lightly toast the hazelnuts and chop them coarse
In a bowl combine flour, salt, baking powder and baking soda. Mix well.
Add cold butter. Mix using a pastry cutter or a fork until it becomes a sandy texture.
Add milk, yogurt and vanilla. Mix just until it starts to come together, do not overmix.
Fold in the chocolate chips and hazelnuts.
Flour a flat surface and place dough down, lightly sprinkling more flour on top.
Knead very lightly until it comes together, adding more flour as needed to avoid sticking.
Shape into a circle about 1 inch thick.
Cut into 8 pieces like a pizza, you may need to flour your knife in between cuts to avoid sticking.
Chill the dough for 1 hour or freeze it overnight.
Place scones on a baking tray lined with parchment paper, brush with cream/milk and sprinkle cane sugar.
Bake for 15-18 minutes, or just until they become golden brown, and the bottoms begin to brown.
Let them cool on the pan for 10 minutes, then transfer to a cooling rack. Enjoy!