I found one online last night and used that as the basis for mine (as well as the ingredients list from the jar I ate), but I didn't have the correct ingredients or amounts, so I had to improvise a bit. Turned out OK...!
This is what mine had in:
90g hazelnuts, blanched
2tbsp corriander seeds
2tbsp cumin seeds
2tbsp sesame seeds
1tbsp oregano
1tsp salt (this was too much, use less)
1tsp pepper (this was way too much, use much less!)
1tbsp mint (this was an attempt to undo the overly peppered mix - I'm not sure I can taste it much but it 'diluted' the mix enough that it tastes OK now
The jar I had also had poppy seeds in, but I didn't have any of those.
I toasted them in a dry frying pan and then pulsed in the blender.