It looks like the butter is being used to hide the grain of the WW bread. I wonder if perhaps you knocked the saturation up as well just to get the egg yolk up there?
Did you know you can increase saturation in specific color channels as well (or at least you can in PS)? This is legal in basic editing.
Check out the tutorial on selective desat using basic editing rules if you want to know what is and is not legal in this technique.
mmmmm, I know what I'm having for breakfast! This is really nicely done. You've captured this challenge without blowing out all of the highlights. Good job!
I really like how you made the yolk the focal point for this picture (rule of thirds).... and mmmm, I missed breakfast today, now I am wishing I had made myself one of these! I give it a 7