Fresh Strawberries. Of course, you need fresh strawberries. Fresh Mint. Fresh mint is essential for any Moscow Mule cocktail. You can grow it in your garden during the summer or find it in the herb section in your local grocery store. Fresh Lime. I am an absolute proponent for fresh lime, I do not like using fake lime juice in cocktails. I think it adds a weird flavor and it's just as easy to add fresh lime to your cocktail. Ginger Beer. You need ginger beer for any Moscow Mule, I prefer to use diet ginger beer, but you can use whatever ginger beer is your favorite. Vodka. Traditional Moscow Mules are made with vodka, if you want to make it with another liquor, feel free!