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Choose a sealed, undamaged bag of berries that appears solidly frozen, read its storage and ingredient labels, and keep the package details in case of a recall. For home storage, maintain your freezer at 0°F (-18°C). These checks help you shop and store berries safely, but neither a label, a grade, nor a frozen appearance can prove that a particular bag is free of pathogens.
How do I choose frozen berries?
Compare packages by what they tell you and their condition—not by assuming that a brand, origin, organic label, or package style guarantees greater safety. The FDA says the vast majority of frozen berries eaten in the United States are consumed safely, while also documenting past outbreaks and explaining that freezing does not reliably eliminate viruses.
- Check the package: Pick a sealed, intact bag with no tears, leaks, or suspicious signs of thawing and refreezing.
- Check the product: Confirm whether it is a single berry or a blend, and read the ingredient list for added sugar or other ingredients that suit your recipe and preference.
- Check the label: Look for storage and preparation directions, date wording, and a legible lot or product code.
- Consider the use: Berries for smoothies, yogurt, or fruit salad may be eaten without cooking; berries in a baked recipe receive a cooking step.
The FDA’s sampling assignment found hepatitis A virus and norovirus contamination rates below 1% among sampled frozen strawberries, raspberries, and blackberries in FY 2019–2023. It found no statistically significant difference in prevalence by domestic versus imported origin for each berry type. Those results apply to that defined sampling assignment—not every product or future lot—and the FDA said it found no evidence linking violative products in the assignment to foodborne illness outbreaks. Read the FDA sampling report.
What should I look for on a frozen berry label?
Read the product name and berry type, ingredient list, storage directions, date wording, and any lot or product identifiers. These details help you choose berries for a recipe and identify a package if a recall is announced.
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A use-by date generally reflects the manufacturer’s recommendation for best quality, not a universal food-safety deadline; infant formula is an exception. A date cannot tell you whether a bag stayed frozen throughout storage or whether its lot is affected by a recall. Follow the package’s specific storage and preparation instructions. FDA explains date labels and food storage.
If a USDA grade appears on a package, treat it as a description of quality characteristics, not a safety certification. Frozen-berry grades cover attributes such as color, defects, character, flavor, and odor. See USDA’s frozen-berry grades and standards.
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How do I check whether berries have been recalled?
Use the exact product details in the FDA notice rather than relying on a broad warning about frozen berries. Notices may identify the product by name, package size or type, UPC, lot code, sell-by or use-by date, package image, and distribution area. Follow the notice’s instructions; do not give recalled food to another person or an animal. The FDA also offers recall notifications, including commodity-specific options. FDA’s recall guide explains how to identify affected food.
For example, an FDA-distributed notice dated July 29, 2026, reported that Publix recalled all lots of GreenWise Organic Whole Blueberries and Whole Mixed Berries because of possible E. coli O145:H28 contamination. The notice said the products were distributed to Publix stores in Alabama, Florida, Georgia, Kentucky, North Carolina, South Carolina, Tennessee, and Virginia, and noted potentially serious complications, particularly for young children, older adults, and people with weakened immune systems. This was a specific recall, not evidence that all frozen berries or all organic berries are unsafe. Check the FDA’s live recalls and safety alerts for current notices and package-specific instructions.
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How can I spot a damaged or thawed-and-refrozen package?
Do not buy a bag that is open, torn, leaking, or appears to have been resealed. Avoid packages that seem to have thawed and refrozen. The FDA notes that food stains or leakage on frozen-food cartons can indicate that the contents melted and refroze. See the FDA’s advice on inspecting frozen-food packaging.
Loose berries may be easier to portion, but clumping by itself is not an established safety test. Package condition and temperature history are more useful checks; appearance alone cannot establish whether berries are contaminated.
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Are frozen berries safe to eat raw?
Freezing preserves berries but does not sterilize them. The FDA says freezing stops bacterial growth but does not kill most bacteria, and viruses can survive low temperatures. That matters when berries are eaten without a cooking step, such as in smoothies, yogurt, or fruit salad. The FDA explains its frozen-berry virus sampling.
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Historical outbreaks are a reason to take recalls and handling directions seriously, not proof that a random bag is unsafe. The FDA’s sampling report records that the 2023 frozen organic strawberry hepatitis A outbreak resulted in 10 illnesses and four hospitalizations. Its 2020 update describes three hepatitis A outbreaks and one norovirus outbreak linked to frozen berries in the United States from 1997 through 2016. The FY 2019–2023 sampling report and FDA’s 2020 update provide context; these historical figures are not current prevalence estimates.
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How should I store frozen berries at home?
Set the freezer to 0°F (-18°C) and follow the package directions. Food that has been properly handled and kept continuously at that temperature remains safe indefinitely, but its quality can decline over time. Flavor, texture, aroma, juiciness, and color may change. The FDA states that freezer burn is a food-quality issue, not a food-safety issue. Read the FDA’s food-storage guidance.
If the power goes out
Keep the freezer closed. The FDA says a full freezer can maintain an adequate temperature for about 48 hours if it remains unopened. If you do not know the freezer’s temperature, check the food: berries with ice crystals remaining or at 40°F or below can be refrozen or cooked. Do not rely on smell or appearance alone to judge safety after a temperature incident. FDA’s guidance covers freezer outages.
Can I refreeze berries that thawed?
Partially thawed berries can be refrozen if ice crystals remain or the food is at 40°F or below, though quality may decline. The USDA Food Safety and Inspection Service gives this guidance for partially thawed food. It is a home-storage rule, not a reason to buy a store package that appears to have thawed and refrozen. See USDA FSIS guidance on food during a power outage.
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