The Right Way to Thaw or Defrost Salmon

Salmon is a healthy and tasty food, but many people are unsure how to thaw or defrost it the right way. If you keep salmon in the freezer, there will be times when you need to thaw it before cooking. Thawing or defrosting salmon safely helps keep it fresh, flavorful, and safe to eat.

Thawing and defrosting are often used interchangeably, but they can involve different methods and time frames. In the sections below, we’ll explain their differences and walk you through safe step-by-step methods.

Thawing vs. Defrosting Salmon

Thawing salmon is a passive and natural process. It happens slowly, usually in the refrigerator, as the salmon gently warms up from frozen to soft. The goal of thawing is to achieve even internal softening, so the fish keeps its texture, moisture, and flavor.

This method works well when you plan ahead, such as moving frozen salmon from the freezer to the refrigerator the night before you plan to cook it. By the next day, the salmon is fully thawed and ready to use.

Defrosting salmon, on the other hand, is an active and intentional process. It uses quicker methods, such as cold water or a microwave, to remove ice from the surface in a short amount of time.

This approach is helpful when you need salmon ready the same day or within minutes. However,  it requires more attention to prevent uneven thawing or partial cooking.

No matter which method you choose, proper storage is key to keeping salmon safe and flavorful. Keeping salmon at the right temperature, knowing how long it can stay in the fridge, and handling it carefully after thawing all make a difference

How to Thaw Frozen Salmon

The best way to thaw frozen salmon is to place it in the refrigerator and allow it to thaw slowly. Keep the salmon in its original packaging or place it in a sealed container or zip-top bag to prevent leaks.

Set it on a plate or shallow dish on the bottom shelf of the refrigerator to avoid drips onto other foods. Most salmon fillets thaw within 8 to 12 hours, while thicker cuts may take up to 24 hours.

For best results, avoid thawing salmon at room temperature. Leaving fish out on the counter can allow harmful bacteria (such as Salmonella, E. coli, and Listeria) to grow.

Plan ahead and move the salmon from the freezer to the refrigerator the day before you intend to cook it. Once thawed, cook the salmon within one to two days.

If the salmon is vacuum-sealed, it is also recommended to remove it from the vacuum packaging before thawing to allow proper air circulation and reduce food safety risks.

How to Defrost Salmon

If you do not have time to thaw salmon slowly in the refrigerator, you may need to defrost as a faster option. The two most common and safe ways to defrost salmon are using a microwave or using cold water.

How to Defrost Salmon Using a Microwave

Begin by removing all packaging, including plastic wrap or foam trays, and place the fish on a microwave-safe plate. Use the defrost setting or reduce the power to 30–50%.

Defrost in 30-second increments,while  flipping or repositioning the salmon between intervals to promote even thawing.

Stop once the salmon is thawed but still cold and firm. Do not allow it to warm or start cooking, as this can negatively affect the texture. Since the microwave may partially cook thinner areas, plan to cook the salmon right away after defrosting.

How to Defrost Salmon in Water

Another safe option for defrosting salmon is using cold water. Place the fish in a tightly sealed plastic bag if it isn’t already packaged, which helps prevent water absorption and bacterial exposure. Set the bag in a bowl of cold tap water, and change the water every 30 minutes to keep it chilled.

Most salmon fillets will thaw within 30 to 60 minutes, depending on their size. Never use warm or hot water, since it can cause the outer layer to warm too quickly and affect both safety and quality.

How to Defrost Salmon Quickly

Microwaving is the quickest way to defrost salmon when you don’t have much time. This method works by softening the ice crystals inside the fish so it becomes flexible fast, instead of slowly warming it throughout.

Since the heat isn’t always even, some areas may start to warm before others, so careful attention is needed. Salmon defrosted in this way should be cooked right away to preserve its moisture, texture, and flavor.

Can You Refreeze Salmon After Thawing or Defrosting?

Refreezing salmon after it has thawed or been defrosted is generally not recommended, but there are some nuances to consider.

Salmon that has been thawed slowly in the refrigerator and kept cold the entire time can usually be refrozen safely, but the quality may decline. Each time salmon is frozen and thawed, ice crystals form inside the fish, which can damage the muscle structure and make the texture softer and more watery.

In contrast, salmon that has been defrosted quickly using water or a microwave should not be refrozen. Rapid defrosting exposes the surface to warmer temperatures, which can allow bacteria to grow even if the center remains cold.

Summary

Thawing and defrosting salmon the right way maintains its taste and safety. Slow thawing is best for quality, while quick defrosting works when time is tight. Make every meal better with our Alaskan Sockeye Salmon or Alaskan King Salmon Filets. These are wild-caught perfectly suited for any cooking plan!