Got my new Rancilio S3 just last Thursday. First thing I noticed was a rubber like new smell from the machine. Still, I set up the machine and started it up. Made my first shot and it tasted and smelled horrible! The shot had a rubber/metal like taste and smell and made very bitter espresso.
I asked the retailer what to do and they sent an e-mail back saying I should wait until I've run about 30 shots through the machine. I'm concerned because Colin states in the article that ...
Thankfully, the Silvia has a marine grade brass boiler ... it does not add anything to the flavor of the coffee
I suspect that it's the (rubber/plastic?) hose that brings the water to the boiler but I'm not sure.
Is this normal?
Is there a way to get rid of this horrible smell and affect it has on the espresso flavor?
Maybe flush out the system with something like:
lemon juice (don't want to use vinegar).
baking powder or soda?
Or just run 30 shots of water through the machine? (I'm up to about 15 by now anyway )