![I feel like this is a good one. I put this ceramic mug in the microwave sometimes and overtime this black sludge appears in the outside? What is it and why do I feel like this is a good one. I put this ceramic mug in the microwave sometimes and overtime this black sludge appears in the outside? What is it and why do](https://preview.redd.it/omkr9m7r1ld01.jpg?auto=webp&s=5b4fab7ea6f97c9b65983ebbbb4038008faa7ac2)
I feel like this is a good one. I put this ceramic mug in the microwave sometimes and overtime this black sludge appears in the outside? What is it and why do
![Cup, microwaved many many times before, but this time heating 3oz of water caused this : r/whatisthisthing Cup, microwaved many many times before, but this time heating 3oz of water caused this : r/whatisthisthing](https://i.redd.it/sutn2avqsub21.jpg)
Cup, microwaved many many times before, but this time heating 3oz of water caused this : r/whatisthisthing
![Buy Dillo He Put a Ring On It – White 11oz Ceramic Coffee Funny Novelty Mug - Superior Print - Dishwasher/Microwave Safe - [Printed in Australia] 89281 Online at Low Prices in India - Amazon.in Buy Dillo He Put a Ring On It – White 11oz Ceramic Coffee Funny Novelty Mug - Superior Print - Dishwasher/Microwave Safe - [Printed in Australia] 89281 Online at Low Prices in India - Amazon.in](https://m.media-amazon.com/images/I/41y2MS335xL._AC_UF894,1000_QL80_.jpg)
Buy Dillo He Put a Ring On It – White 11oz Ceramic Coffee Funny Novelty Mug - Superior Print - Dishwasher/Microwave Safe - [Printed in Australia] 89281 Online at Low Prices in India - Amazon.in
![Amazon.com: LOSTIS Insulation Coffee Mug Set Ceramic Tea Cup With Saucers and Spoons in Handle Microwave Dishwasher Safe Tea Cocoa Milk (Color : Pink, Size : A) : Home & Kitchen Amazon.com: LOSTIS Insulation Coffee Mug Set Ceramic Tea Cup With Saucers and Spoons in Handle Microwave Dishwasher Safe Tea Cocoa Milk (Color : Pink, Size : A) : Home & Kitchen](https://m.media-amazon.com/images/I/5178LXnTHcL._AC_UF894,1000_QL80_.jpg)
Amazon.com: LOSTIS Insulation Coffee Mug Set Ceramic Tea Cup With Saucers and Spoons in Handle Microwave Dishwasher Safe Tea Cocoa Milk (Color : Pink, Size : A) : Home & Kitchen
![I put my coffee cup in the microwave and it scorched right on the 'Do Not Microwave' warning. : r/mildlyinteresting I put my coffee cup in the microwave and it scorched right on the 'Do Not Microwave' warning. : r/mildlyinteresting](https://i.redd.it/t2wy30qpkihz.jpg)