Know your Algonguin from your El Diablo
Sometimes it can appear that us bartenders are speaking in a foreign tongue, this page helps to get us all speaking the same language.
The technical difference between a rocks glass and an old fashioned glass is that although usually the same shape and size, an old fashioned glass has a concave bottom on the inside. This was designed to help crush the sugar, water and bitters into a paste in the bottom of the glass when making an Old Fashioned cocktail.
Although these glasses come in a range of sizes I personally recommend getting one around 12oz (340ml).
A sweetened version of London Dry Gin, popular in the 19th century but soon disapperared. Now being reprodcued done to the revived interest in classic cocktails from that era.