There are three safe ways to thaw food: in the refrigerator, in cold water, and in the microwave. Foods thawed by the cold water method or in the microwave should be cooked immediately after thawing.
Thawing temperature has to be controlled, and there are only four correct ways to thaw frozen foods: In the cooler at 41° F or lower. In a microwave (if the food is to be cooked immediately) Submerged under 70° F or lower running water.
Under cool running water: Food can also be thawed by placing the frozen food under cool running water. The food item or items must be placed in a rimmed container such as a pot or bowl. The food must be completely submerged under potable running water at a temperature of 70°F or below.
Temperature controls
Maintain cold food at 41°F or below. Frozen food must remain frozen. Thaw in the refrigerator, under running water or as part of the cooking process. Never thaw at room temperature.
Never thaw food in a garage, basement, car, dishwasher, plastic garbage bag, in hot water, out on the kitchen counter, outdoors or on the porch. These methods can leave your foods unsafe to eat.
Follow the manufacturer's defrosting instructions. Food should be left out at room temperature for the shortest time possible. Ideally, defrost these foods in the fridge. Foods will defrost quite quickly at room temperature, but harmful bacteria could grow in food if it gets too warm while defrosting.
It is safe to thaw food in the refrigerator, cold water, and microwave. Food thawed in cold water and the microwave is the safest if prepared and used immediately.
Refrigerator Thawing
The most common — and most recommended — method for thawing frozen steaks is in the refrigerator. It couldn't be easier, but it requires some forethought. A day before you're going to cook your steaks, just move them to the fridge, still in their vacuum-sealed packaging.
Never thaw food at room temperature, such as on the counter top. There are three safe ways to defrost food: in the refrigerator, in cold water, and in the microwave. Food thawed in cold water or in the microwave should be cooked immediately.
An appropriate thawing method is putting food in a refrigerator of 10°C. Thawing at room temperature or in a bucket of still water is not an appropriate food safety practice, as it can lead to the growth of harmful bacteria.
Bacteria are dormant in frozen meat, but start to become active as meat thaws. Leaving meat at room temperature for two hours or longer encourages the growth of bacteria and microorganisms that can make you and your family sick.
Safe thawing
It is advised that you do not leave frozen food to thaw on a bench at room temperature. This will allow the outside of the food to warm above 5ºC which will allow food poisoning bacteria to grow.
Remember the 2-Hour Rule: Discard any perishables left out at room temperature for more than 2 hours, unless you're keeping it hot or cold. If the buffet is held in a place where the temperature is above 90 °F, the safe holding time is reduced to 1 hour. Watch the clock with leftovers, too!
You can safely thaw food in one of three ways — submerging and running under warm water that doesn't exceed 70ºF (21ºC), microwaving at 50% power, or, with enough planning, in the refrigerator. Know and practice these methods to prevent food from reaching or staying in the temperature danger zone for too long.
There are three safe ways to thaw food: in the refrigerator, in cold water, and in the microwave. In a hurry? It's safe to cook foods from the frozen state.
Expert-Verified Answer
The method that is not approved for thawing food safely is B: thawing under running water at 70°F or below. Each other method listed, including microwave thawing and thawing in the refrigerator, is considered safe. Option B poses a risk of promoting bacterial growth if not managed properly.
When is it safe to refreeze food? You can safely refreeze frozen food that has thawed—raw or cooked, although there may be a loss of quality due to the moisture lost through thawing. To safely refreeze, the thawed product must have been kept cold at 40 degrees or below for no more than 3-4 days.
Examples of physical contaminants in foods are hair, bandages, fingernails, glass, jewelry, paint flakes, dirt, vermin, vegetable matter, stones, bones, and insects.
Thaw food in a refrigerator at 41˚F (5˚C) or lower to keep dangerous microorganisms from growing. Plan ahead when thawing large items such as turkeys—they can take several days to thaw. Under running water. Thaw food submerged under running water at a temperature of 70˚F (21˚C) or lower.
The most reliable method is to put the frozen food from the freezer in the refrigerator, where it will not cause sudden defrosting of the food and rapid reproduction of bacteria.
Thawing is the process of taking a frozen product from frozen to a temperature (usually above 0°C) where there is no residual ice, i.e. “defrosting”. Thawing is often considered as simply the reversal of the freezing process.
Approved methods for thawing include in the refrigerator, in cold water, and using a microwave. Refrigerator thawing is the safest method, allowing foods to thaw without entering the temperature danger zone. Cold water thawing requires changing the water every 30 minutes to ensure safe temperatures.