For his ideal Dirty Martini, Kevin Beary of Gus' Sip & Dip batches with 10% dilution and uses a double-strength olive brine, which he says yields the perfect salinity, alcoholic strength, and body. After pouring the cocktail, he tops it with a little shaved ice to maintain drink’s the chill while also providing those ice chips that people love from a shaken Martini.