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

Slow cookers and food safety? ›

Yes, if you use them correctly. The slow cooker cooks foods slowly at a low temperature, generally between 170 and 280 degrees F, 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.

Is slow cooker safe for food? ›

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 safe is it 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.

Can meat go bad in a slow cooker? ›

According to the U.S. Department of Agriculture (USDA), slow cookers' max temperatures generally reach between 170 and 280 degrees F (77 and 138 degrees C). That's high enough to kill most bad bacteria, but the USDA still recommends thawing all foods completely before placing them in a slow cooker.

What is the temperature danger zone for a crockpot? ›

A safe slow cooker, cooks slow enough for unattended cooking, yet fast enough to keep food out of the bacterial danger zone. In the danger zone (above 40°F to below 140°F), bacteria grows very rapidly.

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. Does my slow cooker have lead?

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 I leave food in a slow cooker overnight off? ›

On some occasions, you'll want to leave food in the slow cooker to keep warm, during Thanksgiving or Christmas Dinner, for example, or any other event or holiday. While it's perfectly ok to use your crock pot in this way, try to avoid leaving food on the warming setting for more than four hours.

Is it OK to leave slow cooker on for 10 hours? ›

Yes, if you use them correctly. The slow cooker cooks foods slowly at a low temperature, generally between 170 and 280 degrees F, over several hours.

Is it safe to put a towel under a crockpot? ›

Set on a Flat Surface

The best place to use a crockpot is on the kitchen counter. However, any heat-safe, flat surface will also suffice. Avoid setting your slow cooker on an uneven surface, and never place it near loose fabrics, including curtains, kitchen towels, or napkins.

Why can't you put raw meat in a slow cooker? ›

If you simply pop some raw meat in your slow cooker, it won't have a chance to brown, which adds some much-needed flavor and cuts down on plenty of unappealing grease. Instead, you're better served by browning raw meat in a skillet before adding it to the slow cooker with your other ingredients.

What's the longest you can leave a slow cooker on? ›

As long as there is something inside cooking, preferably with liquid, and the top is on, your slow cooker could run for 24 hours or longer. Some liquid will slowly boil out, so the less liquid, the less time to leave it unattended. They key is that something is always absorbing heat from the cooker.

How long can food sit in the slow cooker? ›

Most appliances will automatically shut off after 20 or so hours on this setting, but you shouldn't leave food in a slow cooker for an extended length of time. 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.

What vegetables should not be added to a slow cooker? ›

Tender vegetables

Vegetables such as peas, asparagus and peppers can become a flavorless, mushy mess in a slow cooker.

Is it safe to cook chicken in a slow cooker? ›

Yes, raw chicken can safely be cooked in the slow cooker. A slow cooker is designed to cook raw meats. The long (slow) cooking time combined with the heat from the pot creates steam that safely cooks the meat.

How long can I leave food on warm in the crockpot? ›

“The warm setting is safe to use for four hours once the food is cooked,” Jolley said. “It will only keep the food warm and should not be used for cooking or reheating foods. The warm setting temperature varies on each slow cooker. To keep food safe on the warm setting the food must remain above 140 degrees.”

What are the disadvantages of a slow cooker? ›

What are the disadvantages of a slow cooker? Slow cookers only apply heat to the bottom of the crock, which cuts down on their ability to reduce liquids and brown foods, and develop flavor the same way a Dutch oven or pressure cooker can.

What can you not put in a slow cooker? ›

7 things you should never put in a slow cooker
  1. Lean/expensive cuts of meat. Cuts of meat (Image credit: Shutterstock) ...
  2. Frozen foods. Frozen vegetables (Image credit: Shutterstock) ...
  3. Leafy vegetables. Kale leaves (Image credit: Shutterstock) ...
  4. Creamy ingredients. Milk in a glass jar (Image credit: Shutterstock) ...
  5. Seafood. ...
  6. Pasta. ...
  7. Rice.
Mar 23, 2024

Can I leave food in my slow cooker overnight? ›

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.

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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