It’s time for another round of taste testing! Gail pulled shots from the Rocket Espresso Giotto Evoluzione and the Nuova Simonelli Musica espresso machines, then offered them to our fearless crew members for a side by side taste test. Find out which shots the crew preferred.
Filtering your water is essential if you plan on plumbing in your espresso machine to a direct water line in your location. Without this, you run the risk of scale build-up that can only be removed by a professional taking apart the machine and physically removing the scale. How quickly this occurs will depend on your location — we did have a cafe attempt to go without filtration for just a couple of months and their equipment completely seized up as a result. Clearly, they were working with very hard water, but it’s not a risk we recommend you take, at all.
For commercial locations, there are tons of filtration options that will address a wide variety of water source needs. If you’re looking at that kind of a setup, then you’ll need to install something a bit more sophisticated and robust that will be able to address the multiple appliances that will require water (such as drip coffee makers, ice machines, water fountains and your espresso machine) in a way that’s easy to manage. But for just straight espresso machine filtration, the Mavea Purity C filters are simple, easy to install and do an excellent job of filtering out what you don’t want in your espresso machine’s boiler.
Watch Gail as she walks us through an overview of how she installed a Mavea filter on our La Marzocco Linea.
Keeping your equipment sparkling clean is just as important as the freshness of your coffee and dialing in your grind & tamp — in fact, without the former, the latter will be an exercise in futility. If we have to tell you that rancid coffee oils will adversely impact the quality of your shot, we’re sorry. But if we have to be the first, then we might as well do it right, right? So we asked Louie Poore, who specializes in educating professional baristas on proper equipment care for Urnex, to give us the rundown.
First, he introduces us to Urnex’s new Full Circle, sustainably-produced cleaning products — including a toe-to-toe comparison of Cafiza and Full Circle’s coffee equipment wash.
Next, he walks us through using tablets to backflush the La Marzocco GS/3.
Finally, Gail shows us the newly arrived 1, 2, Brew Kit for Espresso Machines, which features the goodies you need to keep your machine in tip-top shape (plus a bag of Velton’s Coffee of your choice!).
If you drop $1k more on your espresso machine, is there a discernible difference and / or improvement in the shot quality and flavor? We dialed in the Rocket Giotto Evoluzione and the Rancilio Silvia, pulled shots simultaneously and asked three of our fearless compatriots to taste them. Watch as they tell us which they prefer and why.
We had a few viewer requests lately around the weight of things, so we produced two videos covering the following questions: How much coffee is left in the grinder after grinding? How much water is injected into milk when frothing?
In this first video, we weighed out 20 grams of whole beans and then ground them in several different grinders, weighing the grounds afterward to see if any was retained in the grinder.
In the second video, we weighed out 200ml of milk (in most cases — the exception being the stand alone frothers), frothed them to the same temperature on several different machines and then weighed them afterward to see how much water was injected into the frothed milk.
We’ll get you, my pretty! Of course, by ‘my pretty’ we are referring to the array of gorgeously designed Rocket Espresso accessories and BIA Cordon Bleu cups. If you’re not sure how pretty pretty can get, check out Gail’s introduction to these lovely little numbers.
First up — Rocket Accessories:
And now onto the BIA Cordon Bleu line:
We’ve heard concerns from customers on whether or not they should worry about trace amounts of lead or metal poisoning within their machines’ boilers and parts. So we’re going to break down the makeup of particular metals that are housed within your unit to ease your mind — and your fears of caffeine withdrawal.
Water corrosion is where it all begins and understanding your machine and what conditions cause corrosion — oxygen, water, metal and a catalyst — will help you manage and maintain your espresso machine.
Used for some espresso machine boilers and stovetop espresso makers as it heats up the fastest, ‘aluminum is protected from corrosion by increasing the amount of naturally occurring aluminum oxide (Aluminum + Oxygen) on its surface.’
As a mixture of metals, also referred to as an alloy, and under ideal circumstances, Sergio Louissant of LatteMaestro.com explains that this combination protects the aluminum but also has a quicker turn around time in breaking down the aluminum oxide causing the aluminum to corrode.
Chloride in tap water wears down the catalyst that breaks the shield that is the oxide layer between the metal and boiler water, as stated in a piece in the JL Hufford Coffee Tea Supporter Forum. This causes damage to aluminum parts over time so it is best to use filtered water or to regularly clean and descale your machine to slow down the deterioration process.
However, even though machines with aluminum parts are less expensive, that doesn’t mean they’re frowned upon. With its ability to maintain good resistance against corrosion, it just may take more of a closer eye and knowledge to understand the chemistry of it’s maintenance and when its time to switch out parts to prevent the quick deterioration of this material. Because the connection between aluminum and degenerative diseases such as Alzheimer’s is still unclear, many folks try to avoid aluminum as a precaution.
Very resistant to corrosion, stainless steel can be found in Saeco, Nespresso and Capresso machines. But its downfall is being the life of the party when it comes to hosting bacteria for a longer period of time on its surface compared to any other metal.
However, bacteria aside, since you won’t be cutting, dicing or chopping any raw meat on or with stainless steel espresso machine boilers and parts, as long as you keep the stainless steel within your machine clean, this material is ideal for espresso machines as it provides excellent heat retention and assures rapid steam function.
Unlike stainless steel and aluminum, espresso machines that use copper/brass boilers and parts, such as Rocket, Rancilio, Quick Mill, Pasquini, LaPavoni and Francis Francis, not only act like a repellent to those grimy germs and retain heat longer, but they also are the most resistant to corrosion than any other metal.
However, even with it’s popularity in higher end machines, some users are still left worried about the lead content in brass boilers.
While lead is added to some brasses, most manufacturers plate brass with nickel, such as Rocket Espresso, preventing any lead from leaching into water, reducing corrosion and acting as a barrier between brass and water.
But taking extra care when it comes to lead in products, it was in October of 1999 that the California State Attorney General sued 13 key manufacturers and distributors over lead content, leading to the reduction of lead content to 1.5 percent from it’s original 2 to 3 percent in products sold within that state. Following this action manufacturers were asked to reduce lead or to follow the requirement to warn consumers about lead content even if it didn’t have the ability to leach into materials such as water.
Hopefully this trend will catch up to the rest of the 49 states in the U.S. but for now, whether you choose a machine with aluminum, stainless steel or brass, taking precaution is key but knowing how your machine works and what it reacts well with will also keep you happy, healthy and caffeinated.