The safest routine is to thaw food in the fridge, but real life sometimes reaches 5pm with dinner still frozen. A microwave defrost setting followed by immediate cooking is suitable for many foods. Small sealed items may also be thawed under cold water, then cooked straight away.
Don't leave raw meat in warm water or on the worktop for hours. The outside can spend too long at temperatures where bacteria multiply while the centre remains frozen.
Follow package instructions for foods designed to cook from frozen and check that meat is cooked throughout. Add a reminder to move tomorrow's food into the fridge when today's dinner is cleared away.
Fridge overnight - the default
The fridge is the safest default for thawing meat and fish. Put the food in a covered dish on the bottom shelf and allow enough time for the centre to thaw.
Cooking and refreezing rules vary by food and how it was frozen, so follow the packet and current Food Standards Agency guidance. A reminder the night before prevents rushed alternatives.
Bottom shelf, on a plate - contain drips.
Allow 24 hours per kg - thick blocks need longer.
Cook within 24 hours once fully thawed in fridge.
Microwave defrost - then cook now
Use the microwave defrost setting, turn or break up the food when prompted and cook it immediately afterwards. Some edges may begin to warm or cook before the centre is thawed.
Treat the food as raw and cook it thoroughly to the appropriate safe temperature.
Small portions only - large joints defrost unevenly.
Glass and metal stay out; use microwave-safe containers.
Never defrost then refreeze raw without cooking.
Cold water method for sealed portions
Food Standards Agency guidance allows some small items to be defrosted under cold running water when the fridge or microwave is not practical. Keep the food protected from contamination and cook it promptly once thawed.
Follow the packet where it gives a defrosting method. Fridge thawing remains the easiest method to control and avoids unnecessary handling around the sink.
Sealed bag only - no loose raw meat in the sink.
Change water every 30 minutes if not running.
Cook immediately when thawed - no pause on the side.
Do not thaw high-risk food on the worktop, beside a radiator or in warm water. The outside can remain in a temperature range where bacteria multiply while the centre is still frozen.
Do not place frozen poultry or large frozen joints in a slow cooker unless a tested manufacturer or recipe instruction specifically confirms the method is safe.
Keep food out of the danger zone
Thaw in the fridge or use an approved faster method followed by immediate cooking. Room-temperature thawing is not made safe by cooking the centre later.
No counter thaw for hours.
No slow cooker from frozen poultry without a verified recipe.
When unsure, cook longer to piping hot throughout.
Batch portions and the planner
Freeze food in thin, meal-sized portions and label each one with the date and meal. Flat packages thaw faster and prevent you from defrosting more than needed.
Add the fridge move to the planner on the preceding evening.
Label meal name + freeze date on every portion.
Planner note: fridge move the night before.
Flat-freeze for faster emergency thaw.
Cook-from-frozen when allowed
Some commercially frozen foods are designed to cook from frozen. Follow the packet or a tested recipe and allow the stated additional time.
Do not improvise cook-from-frozen timings for poultry or mince. Confirm the thickest part has reached a safe temperature rather than judging only the browned surface.
Extend time - don't guess from fresh-recipe clocks.
Stir stews mid-cook so edges don't overcook while centres lag.
Thermometer beats colour for poultry and mince.