Espresso machines are made from copper, brass, and chrome. The chrome plating typically comes off quickly from the filter handles, exposing the bare brass to the coffee. All that stuff ends up in your coffee (where else should it go?). This means that espresso is pretty much guaranteed to contain copper, zinc, lead, chrome, nickel.
I'm not sure that is safer than the microplastics or aluminium from coffee capsules.
Fully stainless steel machines are probably the best option, but there are very few of those around (and they would probably still leak nickel).
I'm not sure that is safer than the microplastics or aluminium from coffee capsules.
Fully stainless steel machines are probably the best option, but there are very few of those around (and they would probably still leak nickel).