On 28/04/2017 at 3:25 PM, ginagreen said:There will be some differences, what I know is the espresso is not with sugar and milk, it's pure coffee, and ordinary coffee will put sugar and milk.
It's not so simple.
Espresso is served without milk or sugar, but that's not what makes it "espresso". Other 'black coffees' are available, but aren't espressos.
Espresso is a technique for extracting flavor from coffee using pressurised steam, as explained above.
You could add milk and sugar or anything else, but it will still, technically, be 'espresso'. You'd have to be crazy, though.