Oil on Coffee Surface: Help Please

[Joosh]

Hey everyone,

Quite new to the coffee game, but this has started happening over the last few days with my morning brews.



Not sure what it causing it. Using a Delonghi EC146 machine, with fairly strong coffee beans through a blade grinder. Not changed beans recently, and haven't had this issue before. It tastes a bit odd.

Any ideas?

Thanks!
Joosh

 

[Musicphan]

It's probably just a slight change to the roast.. a touch of oil will come from espresso shots - that's flavor!