Coffee Cup Lighting Glitch

Support Lighting and Rendering
1

Hi,
I am using cycles render engine to make this coffee mug with coffee in it. When I render it, there is a weird white blotch on the coffee. I am using denoising at 512 samples.

coffee
coffee960×540 244 KB

Thanks!

2

Hi!
It’s from lamp, no?

3

Yes, it is from an area lamp. Thanks!