Slow cookers and food safety (2024)

Slow cookers and food safety (1)

A slow cooker or "crock pot" is a convenient portable electric appliance popular in today's kitchens. Slow cookers have several advantages. It's "all-day cooking without looking." They are economical to operate and a great way to tenderize less expensive and tougher cuts of meat (shoulder, round, and chuck).

Is a slow cooker a safe way to cook food?

Yes, if you use them correctly. The slow cooker cooks foods slowly at a low temperature, generally between 170and 280 degreesF, over several hours. The combination of direct heat from the pot, lengthy cooking and steam, destroys bacteria making the slow cooker a safe process for cooking foods.

How much liquid do I add?

Water or liquid is necessary to create steam. When cooking meat or poultry, the water or liquid level should cover the ingredients to ensure effective heat transfer throughout the crock. Some manufacturers of slow cookers recommend adding liquid to fill the stoneware 1/2 to 3/4 full. Follow the manufacturer's recipes and directions for best results.

Slow cooker food safety reminders

  • Research conducted by USDA FSIS indicates it's safe to cook large cuts of meat and poultry in a slow cooker. Follow the manufacturer's recipes and safety guidelines.
  • Start clean.Start with clean hands, utensils surfaces and a clean cooker.
  • Thaw first.Always thaw meat or poultry before putting it into a slow cooker. If frozen pieces are used, they will not reach 140 Fquick enough and could possibly result in a foodborne illness.
  • Preheat cooker.Preheat the cooker and add hot liquids, if possible. Preheating the crock before adding ingredients or cooking on the highest setting for the first hour will ensure a rapid heat start and will shorten the time foods are in the temperature danger zone. This is highly recommended when cooking meat or poultry in a slow cooker.
  • Slow cookers and food safety (2)

    Don't cook on warm.Do not use the warm setting to cook food. It is designed to keep cooked food hot.
  • Soak and boil dried beans first.Dried beans, especially kidney, contain a natural toxin. These toxins are easily destroyed by boiling temperatures. Soak beans for 12 hours, rinseand then boil on the stove top for at least 10 minutes before adding the beans to a slow cooker.
  • Put vegetables on the bottom or sides. Vegetables cook the slowest, so place them near the heat, at the bottom and sides of the slow cooker.
  • Keep the lid on. Do not lift the lid or cover unnecessarily during the cooking cycle. Each time the lid is raised, the internal temperature drops 10 to 15 degrees and the cooking process is slowed by 30 minutes.
  • Check with food thermometer. Before taking a bite, check meat and poultry with a food thermometer to make sure it has reached a safe internal temperate to destroy bacteria.
    • Roasts: 145 to 160 F.
    • Poultry: 165 F.
    • Soups, stews, sauces: 165 F.
  • Cool properly. Do not leave cooked food to cool down in the crock. Eat immediately or place leftovers in shallow containers and refrigerate.
  • Don't reheatin aslow cooker. Do not reheat food or leftovers in a slow cooker; instead reheat on stove top or microwave (165 F or above) and transfer to slow cooker to keep warm (140 F or above).

Suzanne Driessen, Extension educatorand Glenyce Peterson-Vangsness, former Extension educator

Reviewed in 2021

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Slow cookers and food safety (2024)

FAQs

Is it safe to eat food in a slow cooker? ›

The direct heat from the pot, lengthy cooking and steam created within the tightly-covered container combine to destroy bacteria and make the slow cooker a safe process for cooking foods.

How long is food safe in a slow cooker? ›

The general rule of thumb is that 2-4 hours is the maximum length of time you can leave food in a slow cooker on warm. After this, it needs to be cooled and transferred into the refrigerator.

Is it really safe to leave a slow cooker unattended? ›

Are slow cookers safe to leave on? Yes, it's safe to leave a slow cooker on when you leave the house. The purpose of a slow cooker is to allow you to cook while you aren't home. Slow cookers simmer food slowly, killing bacteria and raising meat to the perfect internal temperature.

Is it safe to put raw meat in a slow cooker? ›

Research conducted by USDA FSIS indicates it's safe to cook large cuts of meat and poultry in a slow cooker.

Do slow cookers leach chemicals? ›

A crock pot can be toxic if it is made from toxic materials or use toxic glazes, colors or chemicals in any form. The different parts used in a crock pot unit must also be examined for they can leach toxins and/or release toxic off-gassing when heated.

What foods should not go in a slow cooker? ›

10 Foods You Should Never Make in a Slow Cooker
  1. Raw Meat.
  2. Seafood.
  3. Pasta.
  4. Rice.
  5. Delicate Vegetables.
  6. Boneless Skinless Chicken Breasts.
  7. Dairy.
  8. Wine and Other Liquor.
Jan 19, 2024

Can you leave food in a slow cooker overnight? ›

Is it safe to leave a slow cooker on overnight? The short answer: Yes. slow cookers are made to cook food for extensive periods of time (some can be left up to 24 hours). But, of course, follow safe practices outlined in your instruction manual, and keep the appliance on low or warm, as opposed to high, overnight.

Is it safe to leave a slow cooker on warm all night? ›

Given how close that temperature is to the Danger Zone, Crock Pot recommends that you only keep food on the warm setting in your slow cooker for up four hours.

Are old crock pots safe? ›

Is my vintage slow cooker safe to use? If you're still using your vintage Crockpot from the '70s, it's time to give it a check-up. Make sure the slow cooker's cords are in good condition. If the cord is frayed or not perfectly intact from the appliance to the plug, you should not use it.

Can I leave raw food in the slow cooker overnight? ›

Slow cookers are very low wattage appliances, meaning that they cook food slowly, as well as safely. Unlike other cooking appliances, you can leave food in a slow cooker unattended for hours at a time.

Can I cook raw hamburger in a crockpot? ›

Absolutely, which is why you should always adjust times and amounts as needed. Smaller amounts of slow cooker hamburger only need a few hours before they are done. Don't I need oil to cook ground beef? Only if you are using a pan that isn't non-stick and browning it on the stove.

Is it safe to eat slow cooked meat? ›

Large cuts of meat and poultry may be cooked safely in a slow cooker. However, since slow cookers are available in several sizes, check the instruction booklet for suggested sizes of meat and poultry to cook in your slow cooker.

Can bacteria survive in a slow cooker? ›

“A slow cooker is designed to cook foods that have moisture. It's heating [food] up enough that it's creating steam inside, which will help make an environment that bacteria can't really produce or thrive in,” said Meredith Carothers, a public affairs specialist at the U.S. Department of Agriculture.

What are the disadvantages of a slow cooker? ›

One of the downsides of slow cooking is that sauces don't reduce because the water that evaporates from the food condenses on the lid and drips back into the pot. Often that means having to place the pot back on the hob to reduce the sauce at the end, or removing and discarding excess liquid.

Do slow cookers take nutrients out of food? ›

While slow cooking does expose food to heat for an extended period, it also retains many vital nutrients.

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