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Short description:
Boiler or boiler aboutheats the water used to extract the coffee and froth the milk. Essential for maintaining precise temperature control.

Long description:

The boiler in a coffee maker is essential for heating the water to the desired temperature needed for brewing espresso and other coffee drinks. There are different types of boilers, ranging from single boiler models to double boilers, which allow espresso and milk steaming to be done at the same time.