You can use sloe gin in many of the same cocktails you'd use regular gin for, and it is especially popular for giving a fruity twist to the classic gin fizz. Plus, since you can't have a Negroni ...
For creative sloe gin cocktail ideas, Miller suggests switching up your negroni with a "sloegroni" or pouring sloe gin over ice and lemon tonic water. You could also experiment with classic sloe ...