This cocktail is a great example of squisite balance, with none of the elements (spirit, sour and sweet) prevailing over the others, but all are clearly there. Delicious.
Notes: I have abundantly expressed the lemon peel on the rim of the coupe, and then speared it on a pick so it could hang above the foam, which provided an intense lemon kick to the nose. Also, lacking orange bitters, I used a mix of Angostura bitters and homemade grapefruit tincture.