What is espresso?
Coffee and espresso have long been confused and often used interchangeably. The main difference that sets an espresso apart from coffee is that it is made by forcing pressurized hot water through finely ground and compacted coffee beans. Espresso tends to be thicker than coffee and produces a top layer of dark, reddish-brown crema. All coffee taste is the result of three fundamental elements:
Taste: The sensations of bitterness, acidity and sweetness. An espresso must offer a balanced, harmonious taste with no single flavor prevailing.
Foam: A perfect espresso also stands out with its creamy foam. It should be 3-4mm thick and serves to contain the flavor until it is enjoyed.
Aroma: The final signature of an authentic espresso is the aroma. Thousands of scent molecules give espresso its signature, balanced and full aroma.