Italian Delon EC155 pump semi-automatic coffee machine

Espresso is bitter in coffee, but it can not be said to be very bitter. In fact, coffee bitterness is mostly due to excessive extraction or overroasting. Itlay roasting is the deepest roasting degree, and coffee beans are caramelized to a large extent. Normally, there is not much bitterness and should be slightly sweet. However, if the fire is not controlled a little bit, the excessive baking will be carbonized and will be bitter. Extract