Coffee Machine Parts Mix & Match

Study Notes

Coffee Machine Components

Group Head: Essential for espresso extraction; hot water disperses onto ground coffee in the portafilter, extracting flavors.
Portafilter: Holds ground coffee during espresso preparation; includes a handle and filter basket for single or double shots.
Filter Basket: Contains tiny holes; designed to hold ground coffee for extraction; available in single or double shot sizes.
Steam Wand: Thin pipe for delivering dry steam under pressure; used for frothing and texturing milk.
Steam Wand Nozzle: Located at the tip of the steam wand; inserted into milk to aerate and achieve desired milk texture; can feature 2 or 4 small holes for steam distribution.
Hot Water Outlet: Dispenses hot water for preheating vessels and other hot beverages; essential for versatile machine functions.
Pressure Gauge: Manometer indicated dual pressures; measures steam and pump pressure critical for brewing; ideal brewing pressure is between 7-9 bars.
Water Level Indicator: Displays water levels in the boiler; automatic filling for plumbed machines, manual for portable options.
Shot Buttons: Activate water flow to group head; controls heat exchange process for brewing coffee; available in automatic and manual formats.
Drip Tray: Catches overflow from coffee and water; drains away through a waste pipe to maintain cleanliness.
Cup Warmer: Flat surface on the espresso machine; keeps cups and glasses warm before use.
Pump: Carries heated water to the group head; utilizes a heat exchanger to reach optimal extraction temperature of 90-96 °C.
Boiler: Heats water for brewing tea and steaming milk; a vital component for maintaining the machine's functionality.
Water Filter: Removes impurities from water; prevents taste issues and calcium buildup within machine components.
Dispersion Screen: Fine mesh at the group head bottom; ensures even water distribution onto coffee grounds for consistent extraction.
Head Seal: Seals the portafilter to the group head; critical for creating pressure that forces water through ground coffee during extraction.
Steam Wand Knob: Regulates steam flow; essential for texturing milk effectively in espresso drinks.

Description

Test your knowledge on the essential parts of a coffee machine with this mix and match diagram quiz. Understand the functions of each component like the group head and portafilter to improve your espresso-making skills.