In Valencia I drank "Bombon del tiempo (or something similar)". You get a tall glass with ice cubes, an espresso in the cup and a bag of condensed milk of approx. 10ml unsweetened. Now pour the condensed milk into the glass with the ice cubes and then pour the espresso over it. Then all you have to do is stir and enjoy. A great refreshment and energy kick in the hot temperatures. But unfortunately we only have sweetened K.Milk and only in large tubes or cans.