Batch cooking has become closely connected with household budgeting, but the practical details matter just as much as the intention. Recent surveys found that 26% to 33% of respondents prepared more food for leftovers or cooked in batches for financial reasons between October 2022 and July 2024. At the same time, food-safety data shows differences in cooling, fridge temperatures, storage times, and reheating habits.
Contents
- Batch cooking and saving money
- Time spent preparing and cleaning up
- Cooling and fridge storage
- How long leftovers are kept
- Cooking and reheating practices
- Freezing, defrosting, and cheaper cooking methods
Batch cooking and saving money
The strongest recent participation figures come from the Food Standards Agency’s consumer tracking. In Wave 6, covering October 2022 to January 2023, 29% of respondents said they had prepared more food to keep as leftovers or cooked in batches for financial reasons. That rose to 33% in Wave 7, covering April to July 2023, before reaching 26% in Wave 9, covering April to July 2024. These are survey responses for specific waves, not a universal measure of all batch cooking.
The same research tracks related ways of reducing food spending:
- In Wave 6, 25% reported cooking from scratch more for financial reasons.
- In Wave 9, covering April to July 2024, 27% reported cooking from scratch more for financial reasons.
- In August 2023, 34% said they cooked or prepared food from scratch instead of buying it ready-made to save money.
- In March 2025, that figure was 41%.
- In Wave 6, 13% said they kept leftovers for longer before eating for financial reasons.
The pattern suggests that batch cooking sits within a broader cost-saving toolkit. Preparing a larger quantity, cooking from basic ingredients, and keeping food for later are related behaviours, but the survey measures them separately. A batch-cooking plan can therefore be assessed by both its initial preparation and how successfully portions are stored and eaten later.
Time spent preparing and cleaning up
Batch cooking concentrates effort into a larger cooking session. The 2024 American Time Use Survey provides a useful time benchmark for food preparation and cleanup, although its figures cover the wider activity category rather than batch cooking alone.
| U.S. group, 2024 | Average time per day | Share engaging on an average day |
|---|---|---|
| Civilians | 0.67 hours | 63.1% |
| Men | 0.46 hours | 54.2% |
| Women | 0.86 hours | 71.6% |
Among people who did food preparation and cleanup, the average was 1.06 hours per day for U.S. civilians. The corresponding averages were 0.86 hours for men and 1.20 hours for women. These participation-day averages are different from the averages for the entire civilian population, because they exclude people who did not engage in the activity that day.
For a batch-cooking routine, this distinction is useful. A household may spend more time during one cooking session while reducing the need for repeated preparation on later days. The available time-use figures do not quantify that trade-off, so they should be treated as context rather than a direct estimate of batch-cooking savings.
The source for these U.S. figures is the Bureau of Labor Statistics, Table A-1, “Time spent in detailed primary activities and percent of the civilian population engaging in each activity, averages per day by sex, 2024.”
Cooling and fridge storage
Cooling promptly is one of the central practical issues when cooking several portions at once. In Wave 1, covering July to October 2020, 41% of respondents said they put leftovers in the fridge or freezer within one to two hours of cooking. In Wave 9, covering April to July 2024, the figure was 42%.
Fridge-temperature awareness was more common than that specific cooling behaviour. In Wave 1, 59% said they or someone in their household checked the fridge temperature or had an alarm. In Wave 2, covering November 2020 to January 2021, 63% reported this. In Wave 10, covering October 2024 to February 2025, the figure was 60%.
Knowledge of the recommended fridge range was also recorded. In Wave 1, 62% said the inside of their fridge should be between 0°C and 5°C. In Wave 10, 60% gave that range. These are reported beliefs, not temperature readings.
Observed household measurements provide a different view. In the Kitchen Life 2 fieldwork, 34 of 65 observed households with an installed fridge/freezer thermometer had an average fridge temperature above 5°C. Eight of those 65 had an average above 8°C, while the average across all 65 households was 5.3°C. Because this was an observed group with installed thermometers, it should not be treated as a population estimate for every household.
The Food Standards Agency source is “Consumers’ Food Safety Practices in the Home: Trends and Insights From 2020 to 2025”. Its wave labels and Kitchen Life 2 fieldwork period are retained here because the measurements were collected at different times and in different ways.
How long leftovers are kept
Survey responses about refrigerated leftovers changed across the tracking waves. In Wave 1, 70% said they would consume refrigerated leftovers within two days. That fell to 62% in Wave 2, then stood at 64% in Wave 6, covering October 2022 to January 2023, and 63% in Wave 10.
The share saying they would eat refrigerated leftovers after more than two days was 23% in Wave 1, 31% in Wave 2, 27% in Wave 9, covering April to July 2024, and 29% in Wave 10. These categories describe what respondents said they would do; they do not track the age of every leftover actually eaten.
For a practical reference point, USDA FSIS says refrigerated leftovers can be kept for 3 to 4 days, while frozen leftovers can be kept for 3 to 4 months. The agency also says leftovers should be refrigerated within two hours of cooking or removal from a warming appliance. These are current guidance statements accessed in 2026, rather than survey results.
Cooking and reheating practices
Reheating habits were relatively consistent in the supplied tracking results. Among respondents who reheated food, 83% said they would consider reheating it only once in Wave 1. The comparable figure was 79% in Wave 8, covering October 2023 to January 2024, and 81% in Wave 10, covering October 2024 to February 2025.
General thorough-cooking responses were also high. In Wave 1, 76% said they always cooked food until it was steaming hot and cooked all the way through. That was 79% in Wave 4, covering October 2021 to January 2022, and 79% again in Wave 10.
For poultry, 94% said in Wave 1 that they never ate chicken or turkey when it was pink or had pink or red juices. In Wave 10, 87% gave that response. The change is a survey result and does not establish why the answer shifted.
USDA FSIS says poultry should reach an internal temperature of 165°F as measured with a food thermometer. Its leftovers guidance also specifies the two-hour refrigeration window and the 3-to-4-day refrigerated storage period. A thermometer-based check is more precise than judging doneness by appearance alone.
Financial pressure can affect storage decisions. In Wave 7, 20% reported keeping leftovers for longer before eating for financial reasons. In Wave 9, the figure was 10%. The responses do not say how long the food was kept in each case, so they should not be converted into a specific safety risk or storage duration.
Freezing, defrosting, and cheaper cooking methods
Defrosting practices show a persistent room-temperature habit. Among respondents who defrosted meat or fish, 45% said they typically left it at room temperature in Wave 5, covering April to July 2022. In Wave 9, covering April to July 2024, 41% gave that response. The figures apply only to respondents who defrosted meat or fish.
The survey also followed substitutions for oven cooking during periods of financial pressure:
- 59% reported using a cheaper cooking method instead of an oven in September 2022.
- 67% reported this in October 2022.
- 59% reported it in June 2023.
- 54% reported it in July 2023.
- 54% reported it in March 2025.
Other reported changes were smaller. From July 2023 to March 2025, monthly tracking waves found that 12% to 16% reduced the length of time food was cooked for. In July 2023, 11% said they lowered the cooking temperature to save money; in March 2025, 13% said this.
These figures distinguish replacing an oven with a cheaper cooking method from shortening cooking time or lowering temperature. They do not show which appliances were used, the energy saved, or whether the food was batch-cooked. They are best read as indicators of reported cost-saving behaviour rather than calculations of household savings.
For batch cooking, freezing can extend the time available to use prepared portions, while portioning food before freezing can make later reheating more manageable. The USDA FSIS benchmark is 3 to 4 months for frozen leftovers, but the source does not provide a batch-cooking-specific estimate of how many households use that method.
The cost-saving and food-safety figures come primarily from the Food Standards Agency’s consumer food-safety trends report. The time figures come from the U.S. Bureau of Labor Statistics, and the storage and poultry benchmarks come from USDA FSIS: Leftovers and Food Safety.