Cleaning and maintenance
Group head brush
A stiff, heat-resistant brush with an angled head, used to scrub spent coffee from the group and shower screen.
- Type
- Cleaning
- What it is for
- Cleaning and maintenance
- Who needs one
- Essential
- Consumable or kept
- Used up and replaced
- Materials
- Nylon bristles, Plastic handle
- Needs attention
- Use daily; replace every few months.
Safety
The group and its water are hot. Use a brush with a handle rather than improvising, and never brush while the pump is running.
What it is
The cheapest thing in this catalogue and one of the few whose benefit nobody argues about. Coffee residue accumulates on the shower screen and in the group after every shot, goes rancid, and tastes of it. A brush shaped to reach around the dispersion screen while the group flushes takes ten seconds.
How it works
Stiff heat-resistant bristles, an angled neck to reach up into the group, and a handle long enough to keep your knuckles off hot metal.
Why people use one
Because old coffee oil is the most common reason an espresso machine's output tastes stale.
What this actually changes
Separated by what it affects, because “improves your coffee” is not something you can act on. Where the evidence is thin or contested, it says so.
Taste
Real differenceRemoves rancid residue that would otherwise flavour every shot. This is a genuine and immediate effect on a neglected machine.
Equipment life
Modest differenceReasoned, not measuredGrit off the gasket seat means better sealing and less wear.
Who it is for
Worth having if
- Everyone with an espresso machine
Probably skip it if
- Nobody with a group head
Using it well
- Flush the group briefly to loosen residue, then brush around and under the shower screen
- Brush away from yourself so hot water does not run down the handle
- Do it at the end of every session, not when it looks dirty
Cleaning and care
Rinse and stand to dry. Replace when the bristles splay.
What you could use instead
A cloth
Cannot reach behind the dispersion screen, which is where the residue is.
How to use it
Step-by-step techniques this equipment is part of.
When it goes wrong
Often used alongside
Other equipment this one is used with, or that the same brewing methods call for.
Drinks it appears in
Drinks that name this equipment, or that are brewed by a method requiring it.