I recommend making two at a time to give the blender something to grip on
Perfect Black Manhattan
Aromatic bitters, Orange bitters, Amaro (e.g. Averna), Rye whiskey 50% abv
I feel like the Cognac and rum really cancel themselves out so I am only left with a sweat hard lemonade, which is something I could achieve with just vodka and lemonade. Maybe I am just not a fan of split base drinks but I feel like a cocktail should be showing off just one spirit.
It's something to do it you have only one oz. of whisky left.
spiced egg sour
Cognac (brandy), Orange Curaçao, Lemon juice, Sugar syrup (2:1), Egg (white & yolk)