What are the four basics of food safety?
Public health agencies teach four steps: clean, separate, cook and chill. Clean means washing hands and surfaces. Separate means keeping raw meat, poultry, seafood and eggs away from ready-to-eat food. Cook means heating food to a safe internal temperature, and chill means refrigerating promptly.
These steps work because most foodborne illness comes from germs that spread by hands, surfaces and time spent warm.
Food from your own garden and animals does not skip these rules. Homesteaders often handle raw eggs, milk, meat and soil all in one day, which makes habits more important, not less.
How do I keep hands and surfaces clean?
Wash hands with soap and running water before handling food, after using the bathroom, after handling animals or raw meat and after touching eggs. Wash cutting boards, knives, counters and utensils with hot, soapy water between tasks.
Keep animal chores and kitchen work separate. Change out of barn clothes and shoes, and keep pets off counters. Replace worn sponges and cloths often, and launder dish towels regularly.
- Wash hands before and after food handling
- Clean surfaces between raw and ready-to-eat foods
- Keep barn boots and clothes out of the kitchen
- Replace worn sponges and cloths
How do I prevent cross-contamination?
Use separate cutting boards for raw meat and for produce or bread, and keep raw meat on a lower shelf in the refrigerator, in a container that will catch drips. Never put cooked food back on a plate that held raw meat.
Wash fresh produce under running water, even if you grow it yourself, since soil, animals and wildlife can leave germs behind. Ask your extension office about guidance for produce grown near livestock or manure.
Keep raw eggs in the refrigerator, wash hands after handling them and do not use cracked or dirty eggs for food that will not be cooked thoroughly. Ask extension for current egg handling guidance.
How do I cook food safely?
Color and texture do not prove that food is done. Use a food thermometer, and check the current safe minimum internal temperatures on the USDA food safety website for each kind of meat, poultry and egg dish. Homegrown and home-processed meat should be handled with the same care as any other.
Reheat leftovers thoroughly, and keep hot food hot until serving. If you are cooking for young children, older adults, pregnant people or anyone with a weak immune system, ask their doctor about extra precautions.
Thermometers should be checked and cleaned after each use. Insert them into the thickest part of the food, away from bone, and let the reading settle before you decide the food is done.
How do I chill food properly?
Refrigerate perishable food promptly and do not let it sit out for long, particularly in warm weather. Use a thermometer in the refrigerator and freezer to confirm they are cold enough, and check the USDA guidance on recommended temperatures and storage times.
Cool large batches in shallow containers so they chill faster. Thaw frozen food in the refrigerator, in cold water or in the microwave, not on the counter.
Do not overload the refrigerator, since cold air must circulate. Label leftovers with the date, and use or freeze them within the time shown by current USDA storage guidance.
What about eggs, milk and meat from my own animals?
Eggs should be collected often, cleaned according to extension guidance and refrigerated. Raw milk and uninspected meat carry risks, and rules for selling or sharing them vary widely by state, county and town. Ask your state department of agriculture what applies, and ask your doctor about risks for your family.
Home slaughter, butchering and sale are regulated in many places. Check with your state agriculture department and extension office before you begin.
When should I throw food away, and what if someone gets sick?
When in doubt, throw it out. Do not taste food to test it. Follow the guidance on safe storage times from USDA. After a power outage, use a thermometer and food safety guidance to decide what to keep.
If someone develops vomiting, diarrhea, fever or other symptoms after eating, contact a doctor, especially for children, older adults and pregnant people. Your local health department may want to know about suspected foodborne illness.
Key takeaways
- Clean hands and surfaces and keep barn and kitchen separate.
- Keep raw meat, poultry and eggs away from ready-to-eat food.
- Use a thermometer and check current USDA safe temperatures for cooking.
- Refrigerate promptly and cool large batches in shallow containers.
- Ask your state agriculture department about rules for eggs, milk and meat from your own animals.
Sources and further reading
Last reviewed: November 12, 2026. Written by the Homestead & Small Farm Editorial Team. See our editorial policy.