Question

when using frozen food items one should take out only the required quantities thawed food should never be refrozen give reason

Answer 1

When food is frozen at 0oC and below, some of the bacteria found in the food may be inactive but are still alive. When frozen food is thawed, its core temperature rises and bacteria may start to be active again and multiply. Frozen food should therefore not be left to thaw at room temperature, to prevent food poisoning bacteria that may be present from multiplying to high levels.

Thawed food can be safely returned to your freezer provided it was thawed safely in the first place. The worst way to thaw frozen food is to let it sit out on your kitchen counter. Tina Hanes, a registered dietitian said

In fact, it's said the greatest factor impacting whether your food is "safe" isn't whether it's been previously frozen but rather is related to how much time it spends in the temperature "danger zone" (between 40 to 120 degrees F).2


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Answer 2

When using frozen food items one should take out only the required quantities thawed food should never be refrozen, as while putting a thawed piece of steak or brick of cheese back into the freezer might lead to some changes in taste or texture, it's perfectly safe and poses no risks to your health.

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