Anchovies are available in a jar:https://produkte.migros.ch/mimare-msc-sardellen-filets-cantabria
I would be delighted if this also came with other similar products.

What is the difference between aluminum cans and glass jars? Is one of the two more environmentally friendly? It makes no difference when it comes to disposal, here in Zurich (city) I have to go to the blue collection containers in the neighborhood for both aluminum cans and jars...

In glass jars do not release any harmful substances

And from the moment cans are opened, you can no longer leave the contents inside. This is not a problem in jars and they can even be resealed.

I hope the jars will then be competitively priced with those from Aldi. The anchovy jars there are a little smaller, but really much cheaper and come in 3 varieties: in salt, in oil and rolled with a caper (in oil).

There is also a considerable risk of injury, especially with sardine tins, so you need a lot of washing-up liquid to make them recyclable (you can't just rub them with a sponge in your hand).

Thanks @Bodenseeknusperli.Ganz heiss/mit Kocher is unfortunately also not particularly sustainable (energy consumption).

@Michi2000

And what about the aluminum lids? With the jam jars it was once said that they would release harmful substances...

Thanks for the tips on rinsing. I'll try that next time.

And yes, the various jars of anchovies from Aldi are really great!

No problem for the bathroom! You won't cut yourself on a bathtub like you would on an open can of sardines.

@Bodenseeknusperli

So that doesn't work with the hot bath, I'm going to fall off my stool ?

*Ironiean*
Iiiiiih You must still be a "warm showerer" ? No, I'm falling off the sofa too.
That's not possible! ? Oh, but you do it ecologically, the warm bath?
So a half-full tub. Or 2 bathers. Or at least 3 more bathers after you? So that was really ecological back then? (and black water - gag).
So the minimum would be to do the hand washing in the bath water after the bath.

And how do you do it?

"Hihi not to be taken "seriously" -ok?" *irony off*