All About Pressure Cookers
By Cheri Sicard
|
If
you're old enough, your memory of pressure cookers is probably of
a steaming, spitting monster of a pot, noisily rattling on the kitchen
stove. I know I have this memory of pressure cookers and it made
me afraid to even try this most useful cooking tool for decades.
The old pressure cookers were scary things. I remember one time
when my mother neglected a pot of pressure cooked beans while she
answered a phone call. A loud explosion rudely interrupted her call,
resulting in beans on the floor, beans on the ceiling, beans on
the walls --- you get the big messy picture.
If you're not so old, you probably have never encountered a pressure
cooker at all. But pressure cookers are back, and good news, they
are nothing like the noisy, rattling, steam spitting models your
mother or grandmother used. Today's pressure cookers are safe and
easy to use.
FabulousFoods.com Recommends:
Amazon.com's
collection of Pressure Cooker cookbooks as well as as selection of
the cookers themselves. |
|
Pressure Cooker Links
Pressure Cooker Cooking Time Tables
The charts at the links below will give recommended
cooking times for various foods.
Pressure Cooker Recipes:
Purchase Pressure Cookers and Cookbook from Amazon.com
|
|
|
What
Exactly Is a Pressure Cooker?
Pressure cookers look like other kitchen pots, except their lids are
a bit more elaborate. How they work is that they completely seal the pot.
When the liquid inside boils, it is trapped inside the pot. Having nowhere
else to go, steam builds up pressure. This results in higher cooking temperatures
and shorter cooking times.
The pressure of the trapped steam can be measured in pound of force per
square inch or PSI. You will often find this term in pressure cooking
recipes. It refers to how many pounds of pressure per square inch you
will be cooking with. Don't worry if this sounds very technical. The instructions
that came with your pressure cooker will tell you how to read the PSI.
The gasket or rubber ring is another important component of today's pressure
cookers, as this makes a seal that traps in steam and heat and allows
pressure to build. The gasket fits on the side part of the cover. In order
to make sure you get a good seal, make sure all the components are clean
and free from food particles.
Even in the old days, most pressure cooker disasters could usually be
attributed to user error, much like my mother and the beans. Nonetheless,
today's pressure cookers offer a much higher safety level than their predecessors.
For one thing, you can't open them until the pressure is released to 0
PSI.
Today's pressure cookers have at least three valves for safety and will
automatically release pressure should it build too high. Different types
of pressure cookers have different styles of valves (refer to the instructions
that came with yours), but if you hear hissing or noise coming from the
cooker, it's the valve telling you to check the pressure.
Why Use a Pressure Cooker At All?
You may be asking, even though today's pressure cookers are safer
than the old fashioned ones, why take a chance at all with something that
cooks under pressure? I felt the same way until I actually tried pressure
cooking. Now I'd be hard pressed to live without my pressure cooker. There
are lots of advantages to using this valuable kitchen tool including:
Nutritional Boost - Due to the shorter cooking time and the fact
that food is cooked in less liquid that gets boiled away, more vitamins
and minerals are retained than with conventional cooking methods.
Saves Time - Food cooks up to 70% faster in a pressure cooker,
making it a wonderful tool for when you come home after work and have
to get dinner on the table in a hurry. You can put ingredients in the
pressure cooker and by the time you're finished tidying up the kitchen
you can have a wholesome, hearty home cooked meal.
Energy Efficient - As less cooking time is needed, less energy
is needed to accomplish the task.
Cooler Kitchen - As all the steam and heat stays within the pot,
your kitchen stays cooler than with traditional stovetop or oven methods.
Cleaner Kitchen - As all pressure cooker foods are cooked in a
covered pot, there are no messy splashes or spatters to clean up and no
boiled over foods - ever!
How to Buy a Pressure Cooker
You'll find a variety of pressure cookers on the market, usually ranging
from 4 to 8 quarts. If you can only afford one, a 6 quart model is good
for most jobs, but go larger if you have a big family.
The pots are made of aluminum or stainless steel and like with all cookware,
you get what you pay for. I prefer the stainless steel models as they
are generally higher quality, heavier pots, which always results in better
cooking with less danger of food sticking to the bottom. The heavier stainless
steel models are also great because you can brown or sauté foods in them
before cooking under pressure, without dirtying another pot.
Different
models have different valves and locking systems, but all work in much
the same way. I have a Kuhn
Rikon Duromatic (pictured at the top of this page) model that
is so easy to use, it made me kick myself for not giving pressure cookers
a try years earlier. It's so simple, I use it as often to quickly steam
veggies for quick side dishes at dinner as I do for cooking soups and
entrees. I love the Kuhn-Rikon
Duromatic models the best of all I have tried. They are simple and
absolutely foolproof.
Some pressure cookers -- much larger 10 quart or more versions -- are
also capable pressure canning (putting up food for future use without
refrigeration). This lies out of the scope of this article, but if you
do can (or plan on canning) you might want to check into one of these
models. One we especially like is All
American Pressure Cooker and Canner (pictured at right).
General Pressure Cooking Guidelines
- Never fill your pressure cooker more than half full with foods or
two thirds full of liquid. Foods have a tendency to increase in volume
under pressure so it is important to never over fill your pressure cooker.
Most cookers have a mark stamped on the inside that lets you know when
you've put in the maximum amount.
- For extra flavor, brown or sauté foods first just like you would when
cooking with conventional methods. For instance brown the meat and onions
for a soup, before adding other liquids and cooking.
- Use less liquids than with conventional cooking methods. When cooking
under pressure, less liquid evaporates than with conventional or stovetop
methods. Likewise slightly less liquid is usually required.
- Add different ingredients at different times. Since food cooks so
quickly, you will want to add slower cooking ingredients first, then
later, release pressure, add faster cooking ingredients, seal and cook
more. For some recipes with many ingredients, you may do this "stop
and go" technique several times, but it's worth it so the finished products
retains texture as well as flavor.
- Be ready to adjust the stove heat. If the pressure builds too high,
you will want to immediately lower the temperature so it comes down.
This is a easy on a gas range or even today's new electric models. However,
if you have a standard electric stove, it's helpful to have one burner
set on low heat while you build pressure in the cooker on another burner
over high heat. Once you reach the desired pressure, move the pot to
the burner with the lower heat in order to maintain the pressure at
the desired level.
- Begin counting cooking times when the pressure cooker has reached
the full pressure, or PSI, called for in the recipe.
- Estimate cooking times on the low side. Because foods cook so rapidly
in the pressure cooker, a few extra minutes and they can turn to mush.
If in doubt, check it out - release pressure, open the pot and test
for doneness. If it's undercooked, you can always cook it more. If it's
overcooked, you are stuck with it.
- Increase cooking times slightly at high altitudes. You should be fine
if you live at sea level to 2000 feet above sea level. After that, a
good rule of thumb is to increase the cooking time by 5% for every 1000
feet higher than that 2000 foot base.
Releasing Steam
You cannot open today's pressure cookers until you completely release
the pressure from the pot - a huge safety improvement over the pressure
cookers of yesteryear. Depending on what you're making, you will release
steam, and therefore pressure, from your pressure cooker via the natural
release or quick release methods. The recipe will tell you which is the
preferred method.
The Natural Release Method - This method merely means you remove
the pressure cooker form the heat and wait for the pressure to slowly
release as the temperature of the pot lowers. Foods like soups or tough
cuts of meat benefit from this extra cooking time, becoming more tender
and flavorful.
Quick Release Method - Some pressure cookers have an automatic
release method (check the instructions that came with yours). If so simply
follow the instructions to release steam and pressure. If your pressure
cooker does not have an automatic release method (and don't worry if it
doesn't -- many do not), it's still simple to quickly release pressure.
All you have to do is move the cooker from the stove to the sink and run
cold water over the top side of the pressure cooker until the all the
pressure is released. It should take less than a minute.
Tips for Safe Pressure Cooking
- Too much pressure is created in one of three ways: the heat is too
high; the pressure cooker is overfilled, the pressure regulator valve
is obstructed or malfunctioning.
- Never fill your pressure cooker more than half full with foods or
two thirds full of liquid. As steam builds up it needs space. Over filling
your pressure cooker can result in food particles getting lodged in
the valves, which can result in pressure not being released.
- While it's important not to overfill the cooker, you must use enough
liquid in order to build pressure. Usually at least 2 cups for larger
pressure cookers.
- Inspect the gasket or ring, making sure it is not dried out and still
flexible (most manufacturers suggest replacing the gasket once a year).
If the gasket is not in good shape, it will be impossible to attain
a good seal and build pressure.
- Inspect the valves to make sure they are free of debris and food residue.
The instructions that came with your pressure cooker can tell you more
thoroughly what to look for and how to maintain the valves.
- Do not deep fry in your pressure cooker. It was not meant for this
task and it can be dangerous as hot oil is highly combustible!
Cleaning and Storing Your Pressure Cooker
Take care of your pressure cooker and it will last you for a lifetime of
great cooking. Here are some basic maintenance tips:
- Remove the rubber gasket or ring and wash this separately by hand.
- Never immerse the cover in water as it can clog and damage the safety
valves.
- Hand wash the pot by hand with your favorite dishwashing soap.
- Do not store the pressure cooker with the lid locked in place as it
can damage the rubber seal. Also if moisture is present it can create
a seal that's difficult, if not impossible, to open.
- You can conveniently store the pressure cooker pot with the lid placed
upside down on top of it.
Adapting Regular Recipes for the Pressure Cooker
You can cook most anything in the pressure cooker, although to be
sure, it is better suited for foods that require long cooking times, such
as soups, stews, beans and grain dishes. That said, I often make crisp-cooked
steamed vegetables in my pressure cooker - the secret is to only cook
them for a minute or two under pressure.
There are not many changes to make when adapting recipes for the pressure
cooker. Just make sure you are using enough liquid to create steam (usually
a minimum of 2 cups, you can get away with a little less for foods that
cook quickly like steamed vegetables).
Sear meats and aeromatic vegetables like onions for better flavor before
closing the pressure cooker and cooking under presuure.
Other than that, the most important thing to monitor is the cooking time.
|
|