Keep mackerel cool on the trip from the market to your house. Never let it stay unrefrigerated for long. To store mackerel, remove packaging, rinse fish under cold water, and pat dry with paper towels. Fish deteriorates when it sits in its own juices, so place it on a cake rack in a shallow pan filled with crushed ice. Cover with cling wrap or foil and set in the coldest part of the refrigerator. Mackerel will store well this way for up to two days. When well-wrapped, mackerel can be frozen for up to two months in a refrigerator freezer and for three to four months in a deep-freeze. Use lined freezer paper and wrap fish tightly from head to tail with at least two layers of paper. To thaw fish slowly, unwrap, place in pan, cover, and leave for 24 hours in the refrigerator. To thaw more quickly, place the whole fish (wrapped in a watertight bag) in a sink with cool running water, allowing about 30 minutes per pound (about 450g). For fastest thawing, use the defrost cycle of your microwave, allowing 2 to 5 minutes per pound (450g), with equal standing time in between zaps (as one minute defrost to one minute resting).
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The information presented in the Food Guide is for informational purposes only and was created by a team of US–registered dietitians and food experts. Consult your doctor, practitioner, and/or pharmacist for any health problem and before using any supplements, making dietary changes, or before making any changes in prescribed medications. Information expires December 2024.