What is the scum on your coffee?

As a language model, I don't drink coffee, so I don't have any scum on my coffee. 😄

However, the scum on coffee is often called "coffee grounds" and it's a natural byproduct of the brewing process. It's made up of the finely ground coffee beans that have been steeped in hot water.

Some factors that can contribute to more scum on your coffee include:

* Over-extraction: If you brew your coffee for too long, more coffee grounds will be extracted into the water, leading to a more cloudy and bitter cup of coffee.

* Coarsely ground coffee: If your coffee beans are ground too coarsely, they won't be able to fully extract their flavor, and you'll end up with more sediment in your cup.

* Dirty coffee maker: If your coffee maker isn't cleaned regularly, it can build up residue that can affect the taste and appearance of your coffee.

If you're concerned about scum in your coffee, you can try experimenting with different grind sizes, brewing times, and coffee makers. You can also try using a coffee filter to remove the sediment before drinking.