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?

I Bought Salmon a Week Ago and Planned to Cook It Today — But It Had a Yellow Stain. What Is It?

You finally pull the salmon out of the refrigerator, ready to cook a healthy dinner — and then you see it. A yellowish stain or patch on the flesh. Suddenly, dinner feels questionable.

So what is that yellow discoloration on salmon? And more importantly — is it safe to eat?

Let’s break it down.