Puckvraagje van Caffeine Magazine

1
The bottom of the coffee puck is mottled is this perfectly normal?
CgZHogIWQAA7EbW.jpg

Waar komen die zwarte (scorched?! ;) ) vlekjes vandaan??
Ah! How sweet coffee tastes, more delicious than a thousand kisses, milder than muscatel wine.
Coffee, I have to have coffee, and, if someone wants to pamper me, ah, then bring me coffee as a gift!

The Coffee Cantata - J.S.Bach