Description
The Imusa GAU-18234 is a cast aluminum moka style brewer with an electric base, which puts it in an unusual position. It brews the way a stovetop moka pot does, by pushing steam pressure through a grounds basket into an upper chamber, but it does it on its own heating element with an on and off switch instead of on a burner. That combination is the whole product, and it is also where this listing has a serious gap.
What it is and where it fits
This makes small, concentrated coffee in the Italian and Cuban style. The listing gives the sizes as 3 or 6 espresso cups, and the word cup is doing a lot of work there: an espresso cup is a demitasse of roughly 2 ounces, not a mug. Six cups is around 12 ounces of finished coffee in total, which is two decent mugs at most. Anyone expecting a pot has misread the listing.
At 7.1 inches deep by 4.72 inches wide by 9.3 inches high and 2.72 pounds, it takes almost no counter and can live in a cupboard between uses. Imusa lists the recommended uses as Cuban coffee preparation, Italian coffee preparation, moka brewing, travel, office use and entertaining guests, and the honest fit is a household that wants strong small coffee without a pump machine, or a kitchen with no stovetop worth using.
Living with it day to day
Moka brewing needs attention, but not for long. Water goes in the base, ground coffee goes in the funnel basket without tamping, the top screws on and the switch goes on. Coffee climbs into the upper chamber over a couple of minutes with a distinct gurgle at the end, which is the audible cue to switch off. The listing publishes no brew time and no noise figure, and the gurgle is the only signal the machine gives.
The detachable base is the feature that separates this from a stovetop pot and it earns its place, because the carafe portion lifts off the element to pour and to wash. Cast aluminum heats fast and stays hot, and the listing specifies a cool touch handle, which matters on a body that gets genuinely hot all over.
Cleaning is where moka pots ask for discipline. Grounds have to come out of the funnel while it is still warm, the gasket and the filter plate need rinsing, and aluminum should not be scrubbed with anything harsh or put through a dishwasher unless the manufacturer says so, since dishwasher detergent dulls and pits bare aluminum. This listing does not state dishwasher suitability either way. The result if it is neglected is a stale, metallic taste that no amount of good coffee fixes.
Controls and connected features
There is an on and off switch and nothing else. No display, no timer, no temperature setting, no app, no Wi Fi and no account. The listing’s interface field says buttons, which in practice means one switch, and the operation mode field says manual, which is fair: the machine heats, and the person decides when to stop it.
There is also no automatic shutoff mentioned anywhere on this listing, and on a moka style brewer that is a meaningful absence rather than a missing luxury. A moka pot left on heat after the coffee has climbed will scorch what is left in the base and can boil dry. Anyone who walks away from appliances should treat that as a reason to look at a machine that stops itself, such as the automatics in the coffee machines category.
Running cost and upkeep
This is the important part and the listing does not help. The GAU-18234 has an electric base and therefore plugs into a wall, and the specification block records no voltage, no wattage and no amperage at all. That is a real omission for a heating appliance, made worse by the fact that the same listing recommends it for travel. A traveler who assumes a 120 volt North American appliance will work on 230 volt mains is going to destroy it, and nothing on this page confirms which market this unit is built for. The rating plate on the base is the only trustworthy source, and it should be read before the plug goes anywhere near an outlet or an adapter. There is no gas, no venting, no water line and no drain.
Running cost is otherwise the lowest of any powered brewer here. The filter is reusable, so there are no papers and no pods, and any ground coffee works. The consumable that does exist is the rubber gasket, which hardens with heat over a year or two and stops sealing, at which point the pot starts leaking steam from the seam and brews weakly. Gaskets and filter plates for moka style brewers are inexpensive and widely available, and replacing them is the standard maintenance for this design. Descaling the base is the other periodic job in hard water areas.
Highlights
- Electric base with a detachable carafe, so it works with no stovetop and pours away from the element.
- Cast aluminum body with a cool touch handle.
- Reusable filter and any ground coffee, so there are no pods, papers or cartridges to buy.
- Small footprint at under 5 inches wide and 2.72 pounds, easy to store between uses.
- Makes the concentrated Italian and Cuban style coffee that drip machines cannot.
Things To Consider
- No voltage, wattage or amperage is published for a product that plugs into a wall. Read the rating plate before use, especially before using it abroad.
- No automatic shutoff is mentioned, so it should not be left unattended once it starts brewing.
- Three or six espresso cups means roughly 6 to 12 ounces total, not a pot of coffee.
- Bare aluminum and dishwasher detergent do not mix, and the listing does not state dishwasher suitability.
- The gasket is a wear part that will eventually need replacing.
- The listing calls this an espresso machine, and a moka style brewer does not produce true pump pressure espresso.
Who it is not for
Anyone who wants real espresso with crema needs a pump machine, and the Breville Bambino Plus is the entry point for that in this catalog. Anyone who wants a mug of American style coffee will find the output far too small and far too strong, and should look at a drip machine such as the Mr. Coffee SK12-RB. It is also the wrong appliance for anyone who wants to press a button and leave the room, since there is no automatic stop, and the wrong appliance for anyone who wants milk drinks, because there is no steam wand and no frother. Households that like strong all metal brewing but want a larger volume should compare it with a stainless percolator from the coffee makers section instead.
