The best way is to smell and look at the tuna: signs of bad tuna are a sour smell, dull color and slimy texture; discard any tuna with an off smell or appearance. Bad tuna steak on the other hand will be the opposite; it will smell and taste extremely fishy, and the flakes will be verging on mushy. It is unwise to eat tuna in this condition, as it can lead to illness.



What color should frozen tuna steaks be?

And other factors determine the color, including the fat content, species and cut. But for most consumers around the world, vendors say, lollipop-red flesh signals freshness and quality. Tuna treated with carbon monoxide is bright red when first defrosted, and fades within a couple of days to a watermelon pink.

What does spoiled tuna steak look like?

Tuna that has gone bad usually has dark brown streaks, some of which appear black. These streaks will be visible discoloration going through the meat, which you should avoid eating. The Tuna may also turn green at times, another symptom of going wrong. It is not safe to eat Tuna that has any of these discolorations.

Should frozen tuna smell fishy?

Tuna has a strong, meaty fragrance. Whether it’s fresh or in a pouch or can, it should smell clean and fresh. The strong scent of tuna should not be unappealing. A strong fishy odor indicates poor tuna.

Does frozen tuna turn brown?

Tuna quickly turns an unappetizing brown (or chocolate, as it is called in the industry), whether it is fresh or conventionally frozen and thawed. Carbon monoxide, a gas that is also a component of wood smoke, prevents the flesh from discoloring.

How can you tell if tuna steak is bad?

An overpowering fishy stench is likely a signal your tuna has gone bad. Never taste any food if you suspect it is rotten or bad. Throw it straight in the trash. A fresh tuna steak is either flash frozen and thawed, or caught recently and sent directly to your grocer. It doesn’t stay fresh for long.

How long can you eat tuna steak after it’s been frozen?

A fresh tuna steak is either flash frozen and thawed, or caught recently and sent directly to your grocer. It doesn’t stay fresh for long. Once you get your tuna steak home, eat it within 24 hours. If you picked it up a few ago and haven’t had a chance to eat it, it could be bad.

Can you eat frozen tuna with discoloration?

If dry spots or discoloration have developed on the frozen raw tuna, freezer burn has begun to set in – this will not make the raw tuna unsafe to eat, but it will harm the texture and taste.

Is it safe to eat tuna steaks that smell?

If it smells ok it is usually ok to eat. Tuna steak colour can be misleading as an indicator of ‘freshness’ as it is often treated with carbon monoxide to preserve the red colour. My sister always uses frozen tuna steaks (I always use fresh) and hers are always closer to brown in colour than red, if not totally brown.