UK-based department store Harvey Nichols has expanded its range of ready-to-drink (RTD) cocktails with the launch of a bottled Espresso Martini.The single-serve RTD joins the store’s bottled Vesper Martini, Negroni and Old Fashioned. Harvey Nichols’ Espresso Martini is made with vodka, cold brew coffee and Fair Café Liqueur. Packaged in a recyclable aluminium bottle, the RTD Espresso Martini is made without the use of preservatives. Rob Graves, head of food and drink buying at Harvey Nichols, said: “We are excited to finally launch our pre-made Espresso Martini cocktail, packaged in a convenient metal bottle that is completely recyclable. “We worked with our experienced bartenders to create the perfect single serve that allows customers to enjoy one of our classic cocktails in the comfort of their home.” The pre-mixed cocktail contains a small amount of air in the top of the bottle, which when shaken creates a "bar quality" full and frothy head for the cocktail. Bottled at 14% ABV, the new Espresso Martini is priced at £6 (US$8) per 125ml bottle. Earlier this year, the premium department store added a peated Burgundy cask-matured English whisky to its own-label spirits range.