Some people believe that rinsing fish repeatedly will make it fresher or remove every unpleasant smell. In reality, washing raw fish is not a reliable way to eliminate harmful microorganisms, and splashing water can spread contamination around the sink and kitchen surfaces.
If the fish has excess liquid after thawing, gently pat it dry with clean paper towels.
This helps the surface brown more effectively when pan-frying or roasting and reduces excess moisture that could otherwise interfere with cooking.
Always wash your hands and clean surfaces and utensils that have contacted raw fish.
Mistake 5: Cooking Fish Before It Has Thawed Enough for the Recipe
Some fish can be cooked directly from frozen, depending on the cooking method and product instructions. However, partially thawed fish may cook unevenly if the recipe assumes that the fish is fully thawed.
For pan-frying, for example, excess surface ice can cause splattering and make it difficult to achieve a crisp exterior.
For baking, a frozen center may require a longer cooking time than expected.
If you are cooking fish from frozen, follow a recipe designed for that method and check that the thickest portion reaches a safe internal temperature.
For fish that is thawed first, patting the surface dry and allowing it to drain briefly can improve the final texture.
How to Tell Whether Thawed Fish Is Still Good
Freshness begins before the fish enters your freezer. Proper freezing can help preserve quality, but it cannot restore fish that was already spoiled.
After thawing, examine the fish carefully.
Fresh or properly frozen-and-thawed fish should generally have a mild, characteristic smell rather than a strong sour, rancid, or ammonia-like odor. Its flesh should look reasonably intact for the species and product, without unusual discoloration or a slimy coating that suggests spoilage.
Some variation is normal. Different fish species naturally have different colors, textures, and smells, and vacuum-packed fish may have a temporary odor when first opened.
Follow the product instructions and allow appropriate ventilation if the packaging recommends it. If an unusual odor persists, or if the fish has other signs of spoilage, discard it.
Do not taste raw fish to determine whether it is safe.
Also, remember that harmful microorganisms may be present without producing an obvious smell or visible change. Appearance and odor alone cannot guarantee safety.
That is why proper storage, safe thawing, and adequate cooking are essential even when fish looks perfectly normal.
How to Preserve Fish Flavor After Thawing
Once the fish has thawed, the next step is to cook it in a way that complements its natural texture.
Fish is generally delicate and cooks faster than many cuts of meat. Excessive heat or cooking time can cause it to dry out and become firm.
For pan-fried fish, remove excess surface moisture before cooking. A dry surface is more likely to develop a golden crust, while a wet surface may steam instead.
For steamed fish, gentle cooking can help retain moisture and highlight its natural flavor. Ginger, scallions, herbs, and a small amount of soy sauce or another suitable seasoning can add aroma without overwhelming the fish.
For baked fish, consider using a covered baking dish or adding a modest amount of liquid, depending on the recipe. This can help prevent the surface from drying out.
For soups and stews, add fish at the appropriate stage rather than simmering delicate fillets for unnecessarily long periods. The fish should cook through while retaining as much of its natural structure as possible.
Whatever method you choose, avoid relying on strong seasonings to conceal fish that smells spoiled. Seasoning can improve the flavor of good-quality fish, but it cannot make unsafe fish safe.
How Long Can You Keep Fish After Thawing?
Storage time depends on the type of fish, the condition in which it was frozen, the thawing method, and the temperature at which it has been kept.
As a general food-safety guideline, raw fish thawed in the refrigerator should usually be cooked within one to two days, provided it has been continuously held at a safe refrigerator temperature and the product instructions do not require a shorter period.
Fish thawed in cold water or a microwave should be cooked immediately.
Never assume that fish is safe simply because it has been frozen. Freezing slows or stops the growth of many microorganisms while the food remains frozen, but it does not reliably eliminate all harmful bacteria or parasites.
For fish intended to be eaten raw or lightly cooked, follow the supplier's guidance and recognized food-safety recommendations. Ordinary freezing at home should not be assumed to eliminate all parasites that may be present in fish.