Summertime Sunshine
As previously tweeted:
.5oz campari
.5oz lillet
.5oz batavia arrack
.5oz cointreau
1oz rum
1oz fresh lime juice,
splash rhubarb bitters
muddled fresh basil (best to muddle right in the cocktail shaker if you have a long enough pestle or a short enough shaker)
Shake the above hard as you can with ice and pour over ice into a tall glass leaving about 20-25% extra space. Top up with ginger beer. Sip in the sun.