Amaro (Italian for  bitter ) is an Italian herbal liqueur that is commonly drunk as an after-dinner digestif. It usually has a bitter-sweet flavor, sometimes syrupy, and has an alcohol content between 16% and 40%. Similar liqueurs have traditionally been produced throughout Europe.maro should not be confused with amaretto, another Italian liqueur that is sweet and flavored with almonds or with the pits of drupe fruits such as apricots.
An external combustion engine (EC engine) is a heat engine where a working fluid, contained internally, is heated by combustion in an external source, through the engine wall or a heat exchanger. The fluid then, by expanding and acting on the mechanism of the engine, produces motion and usable work.
External combustion engines separate the combustion process (which is the energy input to the engine) from the working gas, which undergoes pressure fluctuations and Internal combustion engines inject fuel and air into the cylinders where combustion occurs. The resulting temperature and pressure changes of the fuel/air mixture (which is also the working gas) act on the piston to