# Food preservation and storage guidelines > Developing situation record from CLSTR: https://clstr.news/situations/20261028-food-preservation-and-storage-guidelines > Updated: 2026-10-28T02:17:02.000Z. Sources: 5. Developments: 2. Guidelines for food safety and quality focus on the mechanisms of freezing and the specific storage requirements for different food types. Freezing serves as a preservation method by lowering temperatures to approximately 0°F (-18°C), which slows microbial growth and enzymatic activity. While food can be stored indefinitely at these temperatures, nutritional value and quality diminish over time. Domestic freezing is noted to be slower than industrial deep-freezing, which can result in larger ice crystals that alter the consistency, flavor, and odor of food. Specific storage recommendations include: • Ground beef: Cooked beef can be safely frozen for two to three months. For optimal quality, raw beef is generally maintained within four to twelve months, though ground beef may only last three to four months. • Chicken: Raw pieces can typically be stored for up to twelve months. • Canned tomatoes: Unopened cans maintain best quality for 12 to 18 months when stored in a cool pantry, but contents must be refrigerated once opened. Consumers are advised to monitor for spoilage and avoid dented or rusty cans. ## Timeline ### 2026-10-28: Guidelines for freezing and storing food in the freezer Freezing preserves food by slowing bacterial growth, but quality varies by item. Beef is best within 4-12 months, while ground beef lasts 3-4 months. Rapid deep-freezing helps maintain texture. 2 sources. https://clstr.news/cluster/guidelines-for-freezing-and-storing-food-in-the-freezer ### 2026-10-24: Food safety guidelines for freezing ground beef and storing canned tomatoes Guidelines for food safety suggest cooked ground beef remains high quality for 2-3 months when frozen, while unopened canned tomatoes last 12-18 months in a cool pantry. 4 sources. https://clstr.news/cluster/food-safety-guidelines-for-freezing-ground-beef-and-storing-canned-tomatoes --- Cite as: Food preservation and storage guidelines. CLSTR, https://clstr.news/situations/20261028-food-preservation-and-storage-guidelines