Caipirinha made with grilled limes.Jessica Webster | AnnArbor.com I invited my friend Jen over for an after-work drink tonight, with the promise that we'd invent some new cocktails. Inventing new cocktails sounds like fun, right? We'll just mix up some alcohols with some herbs and maybe muddle in some seasonal fruits. And then I remembered the last time I invited a friend over to invent some new cocktails.