I did mine with 1.5 of Weller. Much better, as the Sorrel was rather overpowering at 1oz. whiskey.

I might prefer to cut back on the Grand Marinier a bit. Maybe 1 oz or 1/4. Otherwise, it's a wonderful variation of one of our favorites.

The three coffee beans really make a difference; I almost ignored them...don't!

The adjusted receipe may be a bit less spirit forward, but my thought is about 2.5ml of simple.