Top with soda and immediately serve/enjoy. Experiencing this cocktail's light fluffy foamy entry to its bittersweet, earthy, almost coal dust and liquorice...
The grapefruit and fernet work well together. Given the amount of fernet I was pleasantly surprised how it doesn’t dominate. The flavour profile (as opposed exact flavours): fruity-fresh-bitter-herbal almost cola, reminded me of one of my other favourites off this website, the Jeez Louise. Will definitely have again. I had to bump up the fresh grapefruit to about 40ml for my fruit today.
The first time I made this it was as written & I gave it 4 stars. The second time I decided to shake it with one small cube & 2oz. San Pellegrino Pompelmo in the shaker tin, knowing it's not as carbonated as most sodas it would probably be ok. I served it over recycled leftover ice from making other cocktails that I rinse off and put back in a freezer bag. Doing this made it a 5 star cocktail for me, having concentrated flavors while still being able to dilute it to my liking with a few stirs.