Excellent if a bit enhanced. Firstly, I tried according to the specs (I used 20 ml Danish Stauning Rye whisky and 25 ml Nikka Whisky from the barrel, and 1 drop of Bob's orange & mandarin bitter, since I had no oranges) and found it a bit bland.

Then I added another 5 ml Cointreau and 1 more dash Angostura. Now it is really to my liking, kind of complex Old Fashioned.

oh, mellow indeed. Too mellow, sadly.

really value for money, my go to old dark rum at the moment, I am no fan of sweet rum, this one hits the balance without added sugar

Wonderfull fresh fruity and filling//full bodied cocktail for this Copenhagen warm afternoon.
Didn't have Lillet Blanc so used 15 ml Chazalettes Vermouth Blanco and 5 ml Cocchi Americano Blanco instead.
And no oranges at hand, used one drop of Bob's orange & mandarin bitter.
Highly recommend for slow afternoon.