I bought salmon a week ago and wanted to make it for dinner today. When I took it out of the refrigerator, it had a yellow stain on it. What is it?

Fat bloom is more about quality than safety.

The fish may look less fresh, but it’s often still edible.

How to tell the difference

If it smells fresh and has a firm texture, it’s likely fine.

If it smells sour, fishy, or rotten, throw it out.