Curated - reverted recipe to original Savoy ingredients (including vagueness on the part of the Sherry, and Groseille syrup instead of Creme de Cassis). Improved attribution as per the Savoy book.

<br />This is my first cocktail using Zwack liqueur, and I must say it made a favorable first impression. Unlike an earlier comment, I could not discern a mint taste. The Campari, however, made its presence known, but only mildly so. As for this drink I personally rate it 4.5. An exceptionally good drink--either before or after dinner--but I favor before.

I modified this with a 1/2 tsp of rich syrup and it was better, but still not great. 3/5.

Anything with Gilroy in the name should have garlic.

You could back off on the Campari a little.  I like Campari, but I was looking for the Aperol to be more apparent in this drink.  Still really good though.

Real good, Dan.

Thank you very much. I have to admit that it was inspired by the even better Shiver. The Shiver, however, required Clear Creek Eau de Vie of Douglas Fir, which is both hard to find and quite expensive (about $50/375ml, or $133/liter). Bask is easy to make and Kirschwasser is readily available and more likely to be in one's liquor cabinet that just about any other equ de vie, I think. It is full of bright sunshine.