I’ve just bought a “rubber” tamper mat from The Espresso Shop. There is just one tiny snag – it’s not rubber, it’s some sort of bituminous compound.
I’ve worked with bitumen in the past – I was an estimator for a roofing company – and I have no doubt about what I have here. Bitumen is toxic and carcinogenic; not very, but you sure as hell don’t want it around food or drink, if only because of the stink. Which is a big problem, as it Continue reading