Breville Dual Boiler
When covered under the manufacturer’s warranty it is possible to get a replacement in the case of a malfunction.
Quick Mill 02820
Gaggia New Espresso
Ground coffee, especially if freshly roasted and ground, results in much better quality coffee than the kind of results you get with pods or capsules.
It comes with a commercial style steam wand as opposed to a pannarello steam wand. These are harder to master but can allow you to produce better, richer milk froth.
One of the most important aspects to pulling a great espresso is the amount of pressure used. Aspects such as how tightly tamped the portafilter is can affect the pressure and therefore the overall quality of the extraction. A pressure gauge helps you to adjust your process to achieve a perfect 9 bar of pressure.
A 58mm portafilter is the most common size in the industry, offering a greater range of accessories to purchase such as portafilter baskets and tampers.
It has a steam wand, which allows you to make steamed/frothed milk to create other drinks from an espresso base.
With a cup warmer you can heat the cups before pulling your espresso so that it doesn't go cold quickly, which affects the taste and quality. It also means that you don’t have to manually heat them using hot water.
With a larger cup warmer you can heat more cups at a time, particularly useful if you are making many coffees at once.
Rocket Espresso Evoluzione V2
22.9 x 25.4cm
29.2 x 16.5cm
With a transparent water tank you can easily see when it needs to be filled up. This is important as attempting to make an espresso with an empty tank can damage the machine.
The water tank is removable, making it easier to refill.
A PID controller controls the temperature of the boiler electronically. It offers a far greater degree of accuracy and consistency than a regular, mechanical thermostat used to control temperature. This is very important as a temperature of around 92°C to 96°C is key to pulling the perfect espresso.
An integrated water filter produces cleaner water for brewing espresso. It also helps to prevent the build up of limescale.
With a larger water tank you don’t have to refill it as often.
La Marzocco GS3
A higher capacity boiler means that you don’t have to refill it as often.
Rocket Espresso Professionale
The machine alerts you when it requires cleaning.
A 3-way solenoid valve relieves the portafilter of pressure and moisture after the extraction. This produces a dry puck which can easily be removed afterwards. It also means that you don’t have to wait for the pressure to equalise, so that you can make back-to-back coffees.
With a pre-infusion function you get a low pressure of water before it ramps up to around 9 bar of pressure. This gently expands the grinds to get a smooth extraction and to help prevent channeling in the cake.
These buttons can be programmed for different types of coffee such as an espresso, doppio or ristretto. This means once you have mastered a particular style of coffee, you can get it the same every time.
With a double boiler or heat exchanger system, you can brew and steam milk at the same time. This has an advantage over single boiler machines where you have to wait between brewing and steaming for the temperature to adjust.
The time taken to pull an espresso shot is one of four key elements, and should be around 19-22 seconds. Once you have the grind, dose and tamp correct, you can use the shot clock to time the pull perfectly.