The
Bacteria, and other harmful organisms,
need time, food and moisture (or wetness) to grow; but they do not
grow well when the temperature of the food is colder than 41°
F (7°C) or hotter than 135°F (60°C).
The temperatures between 41°F and 135°F are in the .
Keep potentially hazardous foods out of the .
For example, when food is left out in the ,
bacteria can grow fast, and make toxins that can make your
customers and family very sick.
Example of food in :
Eggs sitting out on counter at room temperature.
Cracked eggs should be refrigerated at 41°F (eggs in their shell
can be refrigerated at 45°F)

Preparing Food
Wash your hands. Keep food hot or cold until you are ready to work
with it. Prepare potentially hazardous foods just before you need
them. Don't let the temperature of the food stay in the
Cooking Food
Use a metal stem thermometer to check temperatures
while cooking food to make sure that it gets done all the way inside.
Be sure to properly wash and sanitize you thermometer between uses;
otherwise you risk cross-contamination. Different foods have to reach
different temperatures to be done or safe. The metal stem thermometer
measures the inside, or internal temperature of the food.
A thermometer that works best shows a range of 0°F to 220°F
(-18°C to 104°C). The only way you can be sure the food is
cooked enough is to use a metal stem thermometer placed
in the center of the food; even if you also use a thermostat
to control the temperature in the oven.
When is the Cooked Food Safe?
Here are a few examples of potentially hazardous food
and how hot they must be to be safe. They can be hotter, but they
must be at least this hot to kill harmful
organisms:
- Rare Beef: 145°F (63°C) for 15 seconds
- Hamburger: 155°F (68°C) for 15 seconds
- Pork: 145°F (68°C) for 15 seconds
- Beef, Lamb and Seafood: 145° (63°C) for 15 seconds
- Poultry and Stuffing: 165°F (74°C) (stuffing should be
cooked outside of Poultry) for 15 seconds
You must place the thermometer in the thickest part of the meat or in
the center of the food to get a true reading. Do not touch a bone with
the stem of the thermometer.
All poultry, all food made from poultry, all stuffed meats,
and the stuffing in them must reach 165°F or hotter to destroy
salmonella and other bacteria.
Hamburger (ground beef) must be cooked to 155°F to kill an organism
called Shiga toxin producing E.coli. This includes all kinds of hamburger
such as taco meat, meat loaf, as well as hamburger patties.
Fish, seafood, all foods made with seafood, and all other meats,
such as beef, lamb, and pork must be cooked to 145°F or hotter
to kill the bacteria that causes food borne illness.
Some people like rare beef, and this is the one meat that can be cooked
only to 130°F if it is served right away. No raw meat is really
safe to eat. If your establishment serves raw or undercooked animal
protein, it is necessary that the customer is warned of possible health
risks.
Never cook large roasts, turkeys or stuffed turkeys while they are
still frozen. Their big size keeps the insides from cooking to a safe
temperature. You must thaw them first so the heat can reach the center
of the meat.
Microwave ovens do not cook evenly; you must stir and turn the food
while it cooks to make sure it cooks to the same temperature in every
part. Check the food with a thermometer before you serve
it. (Do not keep the thermometer in the food while it is cooking in
the microwave oven).
How Cold is Cool? How Hot is Warm?
Between the time that you cook the food and you put away the cooked
food in a cooler or freezer, its temperature can fall into the .
This section discusses how to keep food safe while it gets past the
.
You will learn about how to keep cooked foods hot, hot holding,
and how to reheat cold food. You will also learn how to get cooked
foods cool, and how to keep food cold, also called cold holding.
We begin with cooling hot food the right way.
Cooling
You always take a chance when you have to cool food down. The best
way to have safe food is to make it fresh each day, just before you
serve it. If you have food that is left over or made in advance, you
must cool it and store it safely. The first rule to remember about
cooling: Cool hot food as fast as you can to below 41°F (5°C),
past the .
Food that is not cooled fast enough is the Number One cause
of food poisoning.
Potentially Hazardous Foods should be cooled within a 6-hour time
frame (135°F-70°F in first 2 hours; 70°F-41°F in the
next 4 hours).
The following are some ideas on how to achieve that standard:
Cooling Solid Foods Here are five steps
to cool solid foods such as roast, turkey, and solid cuts of meat:
- Cut large roasts and turkeys into pieces no larger than 4 pounds.
- Put all meats and other hot food in the cooler or refrigerator
as quickly as you can; do not let the food sit at room temperature.
- Do not stack pans; leave space for air to move around them.
- Use a metal stem thermometer to check food
temperature (clean and sanitize thermometer stem after
each use).
- Wait until the food has cooled to below 41°F before you cover
it.
Cooling Soft/Thick Foods Examples of
soft/thick foods are refried beans, rice, potatoes, stews, chili,
thick soup or thick sauces. You can cool soft/thick foods by pouring
food into a shallow metal pan. The food cannot
be more than 4 inches deep. For very thick foods like refried beans
or chowder, you must have the food no more than 3 inches deep. You
can also cool soft/thick foods using an ice and water bath. How to
do an ice and water bath will be shown later with the cooling of liquid
foods. Here are seven steps for cooling foods in a shallow metal pan:
- Pour hot food into shallow metal pans.
- Soft/thick foods: keep food depth at 3 inches or less.
- Thin soups and thin sauces: keep food depth at 4 inches or
less.
- Put hot food in the refrigerator as quickly as you can; do not
let food sit out at room temperature.
- Do not cover the food until it has cooled to below 41°F.
- Do not stack pans; leave space for air to move around them.
- Stirring food speeds up cooling time.
- Use your metal stem thermometer to check temperature
(clean and sanitize thermometer stem after each use).
- Once food cools to 41°F, you can place food in a larger container
and cover.
Example of
procedures:
Food being cooled and stored in a deep container in a walk-in
cooler is a violation.
Cooling Liquid Foods When you cool thin
soup and sauces you can use shallow 4 inch metal pans, or you can use
the ice and water bath. Remember, you want the food to cool as fast
as possible to below 41°F. For shallow pan cooling, the food must
be no more than 4 inches deep. Do not cover the food until it has cooled
to 41°F in the refrigerator. Here are eight steps for cooling food
with an ice
bath:
- Close the drain in a large sink. Place the metal pot or pan of hot
food in the sink.
- Fill the sink with ice up to the level of food in the pot.
- Add cold water to the ice.
- Stir the soup or sauce often so that it cools all the way to the
center. Ice paddles or cooling wands can be used to speed up the
cooling process.
- Add more ice as the old ice melts.
- Check the food temperature with a metal stem thermometer.
(Clean and sanitize the thermometer stem after each
use).
- Be sure you have cooled the food from 135°F to under 41°F
in less than 6 hours.
- Put the cooled foods in the refrigerator or freezer.
Each refrigeration unit, cold table or cooler must have its own thermometer
that gives a true measure of how cold the air is, but you must also
check the food with a metal stem or laser thermometer.
Air in the cooler must be able to move around the food, so the pans
and dishes need to have space between them; do not crowd them.
Cold Holding
For cold holding, do not let food stand at room temperature
because that will allow harmful organisms to grow. Store foods
in a refrigerator, refrigerated display case, in ice, or other approved
method. Always hold cold foods at 41°F.Use a thermometer to check
cold holding temperatures in salad bars, prep areas, and in coolers.
If you use ice to keep the food cold on a salad bar or food display,
be sure that the ice comes up to the level of the food that is in
the pan or the dish. Food must be colder than 41°F when
you put it in the ice. Hold cold foods at 41°F or less.
In-line prep coolers manufactured before 2003 can be maintained at
45°F. If your establishment serves food out of a buffet, you must
have a laser thermometer. This allows you to check temperatures without
cross-contaminating between products.
Thawing Frozen Foods
There are only three safe ways to thaw foods, and you must plan ahead
to allow enough time to do it right:
- Thaw food in the refrigerator; it may take a few hours or a few
days. This is the best and safest way. Be sure to put meat in a
container to catch the meat juices and to keep them from dripping.
Put raw meats on the bottom shelf away from ready-to-eat foods.
- Hold the food under cool, running water (70°F or less), never
under warm, hot, or standing water.
- Defrost in a microwave oven; you must then cook it or serve it
right away.
Never thaw food at room temperature, on a counter or in warm or hot water.
These methods let the food get into the
which lets harmful bacteria grow to high numbers.
Some Special Rules for Cold Salads & Sandwich
Spreads
You have learned about potentially hazardous food, and how the bacteria
grow very easily in them. These foods must not be left at room
temperature for even a short time. Foods like potato salad, pasta or
macaroni salad, egg salad and chicken salad have to be cold enough to
keep harmful organisms from growing. When you make these foods, start with cold
ingredients.
- Wash
your
hands before handling the salad ingredients.
- Make cold salads with cold cooked foods such as potatoes, pasta,
chicken and eggs; all ingredients should be chilled to 41°F.
If you wonder about keeping something cold, keep it cold while you check
with your food manager, the boss, or the Health Department.
Hot Holding
After the food is cooked and ready to serve, keep it hot enough to
stop any harmful organisms from growing. There is special equipment
for this. You must turn on steam tables, soup warmers and heated surfaces
before you need them so that they will be hot enough when you put
the cooked food into them. Set the temperature control a little above
135°F, and then check the food with your metal stem thermometer
to make sure the food stays at least 135°F at all
times. Stir liquid food (like soups) so they don't get cold on top.
Covers on the pans will help to keep the heat in and the food hot
enough. Do not try to heat cold foods in these warmers. Hold
hot food above 135°F. You must have a laser thermometer
to check hot foods held in a buffet.
Re-heating
Food that is cooked and then cooled may need to be heated again.
When you must reheat food, do it very quickly (within 2 hours) to
165°F (74°C). The right way to do this is on the stove burners,
or in microwave ovens, convection ovens, or double boilers. Do not
use anything that will heat the food slowly, because it takes too
long to pass the .
Stir the food to be sure that all parts of it are hot. Then use your
metal stem thermometer to check the temperature. Reheat
foods to 165°F.
What About Foods Left at the Table?
When a customer leaves food on a plate or at the table, you must
throw it away. If you have food like chips, rolls and bread and some of
it is left over, you cannot serve it again. Unopened
packages of crackers, jelly, candy or sugar may be served again.
When the Equipment Breaks Down or Power Goes Off
If the electric power goes off, if the water supply is damaged, if
there is no hot water, if the sewer or waste system backs up in the
drains:
- Close the business right away.
- Call the Health Department for help and advice.
If something goes wrong with the stove, the refrigerators, the freezers,
the steam tables, salad bar or display coolers, or any equipment that
keeps the food safe to serve, you must think and act quickly:
- Be sure potentially hazardous hot foods stay hot (at least 135°F
or more).
- Be sure potentially hazardous cold foods stay cold (at least 41°F
or colder).
If a refrigerator does not work right, the temperature of the food in
it can reach the .
Before you move the food to another cooler, check its temperature with
the metal stem thermometer. If it is still colder than
41°F (5°C), move it quickly to a cooler or refrigerator that
is OK.
If a freezer lets food thaw, check the food temperature with a metal
stem thermometer. You can prepare the food, if it is still
colder than 41°F.
If hot holding equipment like a steam table or soup warmer fails,
measure the temperature of the food it was holding. If the food is
still hotter than 135°F (60°C), you have two choices:
- Move the hot food to equipment that is OK and that will keep it
hot.
- Cool the food quickly using shallow metal pans or an ice bath.
You must throw out food that has been found in the
(temperatures between 41°F and 135°F). Do not serve it and
do not give it to staff, family or shelters. Call your local Health
Department office for help and advice.
Self Test
Why is temperature control so important when handling food?
Because 90% of all food poisonings happen when correct temperatures
are not kept. Keep hot foods at 135°F or hotter and cold foods
below 41°F
What should you use to check food temperatures?
A probe thermometer (with a metal stem) is one way to check food to
see if it is hot enough or cold enough. Dials and gauges are not always
right, so check the food with the thermometer. A laser thermometer
is required to check foods held in a buffet line.
Why should you stir food as it cools?
Foods need to be stirred so that they will cool quickly and get out
of the .
If they are not stirred, bacteria could grow in the
center of the food and contaminate
it.
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