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Purchasing & Storing Potatoes
Purchasing Potatoes
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When shopping for
potatoes, look for potatoes that are firm and smooth. Avoid potatoes
with wrinkled or wilted skins, soft dark areas, cut surfaces, and
those that are green in appearance.
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If you need several potatoes for your
recipe that you are making, choose ones that are similar in size for
even cooking.
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When selecting potatoes, choose new potatoes for boiling and
salads. They have thinner skins and are firmer.
Storing Potatoes
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Potatoes should be kept in a cool,
dark place with good ventilation. the ideal storage temperature is
45 to 50 degrees F. At these temperature, the potatoes will keep for
several weeks. Do not store potatoes in the refrigerator, as a
temperature below 40 degrees F. will cause the potatoes to develop a
sweet taste. This is due to the conversion of starch to sugar, which
causes potatoes to darken when cooked.
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If you store potatoes at room
temperature, use them within a week or so.
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It is not recommended that you freeze
cooked potato dishes, as they tend to become watery after reheating. As
the potato is 80% water, this water separates from the starch
causing the reheated potato dish to be watery.
Potato Sprouts are toxic
(poisonous)
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A sprout of any size can be toxic, but
you'd have to eat many sprouts to get sick. Do not buy if they have
sprouted or have a green tint to the skin. There is no problem with the
potato; just cut off the sprouts, and it's fine for eating.
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The same is true for potatoes that
turn a greenish hue. A potato in this condition is "light-struck"
which causes a build-up of a chemical called Solanine.
This
is a natural reaction to the potato being exposed to too much light.
The green part,
if eaten in large quantity,
can cause illness. If there is slight greening, cut away the green
portions of the potato skin before cooking and eating.
Preparing Potatoes
1 1/4 pounds (3 medium
potatoes) =
3 cups chopped or sliced raw potatoes
= 2 to 3 cups cooked mashed potatoes
Potatoes are
easier to prepare and healthier for you when cooked with their skins on.
Always rinse and scrub the potatoes thoroughly before using.
When you are using cut up potatoes in your
cooking, preserve the color by place them in cold water. Limit the water
soaking time to two (2) hours to retain the water-soluble vitamins. Color
discoloration (pinkish or brownish) happens from the carbohydrates in the
potato reacting with oxygen in the air. Potatoes that do become discolored
in this way are safe to eat and do not need to be thrown. Usually the color
discoloration will disappear with cooking.
Cooking Potatoes
Boiled Potatoes
Boiled potatoes should be started in cold water
rather than in hot water. this allows for a more even cooking and heat penetration from
outside to inside during the relatively long cooking time required. Potatoes are never
COOLED in cold water, unlike most vegetables. This would make them soggy.
Tip: For
fluffier boil potatoes, simply pour off all the water after they are boiled and cover the
pot with a double thickness of paper towels, then cover with the saucepan lid. In ten
minutes, steam will be absorbed by the towels and your potatoes will be dry and fluffy.
Baked
Potatoes
Check out my web page on baking
the
Perfect Baked Potato
Scrub well and pierce the ends with a fork or
skewer so steam can escape. Never attempt to bake a mature potato without puncturing the
skin - it might explode.
Mashed Potatoes
Check out my web page on
Making Perfect Mashed Potatoes
Russet potatoes make the best
mashed potatoes.
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Add one tablespoon butter (more or
less if you like) for each two potatoes, and salt to your taste. Beat until the butter is
melted. Then add milk or light cream that has been heated but not brought to a boil (if
you add cold liquid, the potatoes will be cold and gummy). Beat the liquid into the
potatoes to make a smooth, fluffy mixture. Add only enough liquid to make the mixture
smooth, about one tablespoon for each potato. Do not overbeat. they should be soft and
moist, but firm enough to hold their shape.
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Article by
Linda Stradley
of
What's Cooking America.

Learn about the
History of Potatoes
Check out my web page on baking
the
Perfect Baked Potato
Making Perfect Mashed Potatoes
Lots of wonderful
Potato Recipes
Reasons
Potatoes Turn Black After Cooking:
Potatoes
occasionally turn gray or dark after they are boiled; this color
change may be caused by the conditions under which they were grown
or stored. It's impossible to tell which potatoes will turn dark,
but the discoloration does not affect flavor, texture, or
nutritional value. Contact with aluminum or iron will also discolor
potatoes, so cook them in stainless steel pots.
More reasons why
cooked potatoes turn black:
According to the
Idaho Potato Growers:
If the potatoes
were stored too cold (below 40 degrees F) then they can turn black.
Could also have black bruising from being handled (dropped) when
cold. If
your potatoes turn black after they are boiled, you may be using an
aluminum or reactive pot, so it's important to use a pot that's
non-reactive.
While
cooling, iron in the potato combines with other natural compounds,
causing a grey, black, or bluish purple color. To prevent this,
after the potatoes are cooked and drained, stir in a small amount of
lemon juice and keep them covered with a tight-fitting lid.
According to
the American Journal of Potato Research:
After-cooking darkening (ACD) is one of the most widespread,
undesirable characteristics of cultivated potato. With the current
expansion of the potato-processing industry around the world, there
is a renewed interest in the development of new ways to prevent ACD.
After-cooking darkening is caused by the oxidation of the
ferri-chlorogenic acid in the boiled or fried potatoes.
The severity
of the darkening is dependent on the ratio of chlorogenic acid to
citric acid concentrations in the potato tubers. Higher ratio
normally results in darker tubers. The concentration of the
chlorogenic and citric acids is genetically controlled and
influenced by environmental conditions.
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Potatoes are
healthy and potatoes are not fattening!
Following
information is from the National Potato Council and the
Washington State Potato Commission.
Fat free, cholesterol free and low in calories
- A medium-sized potato has no fat, no cholesterol and contains only 110 calories!
Sodium Free
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Low sodium diets help to reduce the risk of high blood pressure and stroke.
Vitamin C — don't just think of oranges
anymore -
By eating one medium sized potato, you will receive 45% of the recommended daily
value of Vitamin C — a great antioxidant.
More potassium than bananas!
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Potatoes contain 21% of the recommended daily value of potassium — a great way
to build stronger bones.
Good Source of Fiber
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The 3g of fiber in one medium-sized potato is 12% of the recommended daily
value. Diets high in fiber are beneficial for a healthy digestive system and may
reduce the risk of cancer and heart disease. Consuming adequate fiber also makes
you feel fuller, helping to reduce snacking between meals.
Less than 10% of the daily value of
carbohydrates -
Potatoes contain 26g of carbohydrates, only 9% of the recommended daily value.
Complex carbohydrates are a great source of energy for the body.
A Great Antioxidant
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Potatoes have one of the highest overall antioxidant activity among vegetables.
Antioxidants protect key cell components by neutralizing the damaging effects of
"free radicals." Potatoes also contain glutathione, an antioxidant that may help
protect against some cancers.
Potato Nutrition Information Table
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Serving size = 148 grams
or 5.2 ounces |
Russet Norkotah |
Russet Burbank |
Red |
Yellow |
White |
|
Calories |
110 |
110 |
100 |
120 |
110 |
|
Calories
from Fat |
0 |
0 |
0 |
0 |
0 |
|
Total
Fat |
0 |
0 |
0 |
0 |
0 |
|
Sodium |
10 mg |
15 mg |
0 mg |
0 mg |
0 mg |
|
Potassium |
680 mg |
640 mg |
710 mg |
810 mg |
700 mg |
|
Total
Carbohydrates |
22 g |
23 g |
23 g |
26 g |
25 g |
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Dietary
Fiber |
3 g |
2 g |
2 g |
2 g |
2 g |
|
Protein |
4 g |
4 g |
3 g |
3 g |
3 g |
|
Vitamin
C |
8 % |
10 % |
10 % |
15 % |
10 % |
|
Riboflavin |
4 % |
2 % |
0 % |
12 % |
2 % |
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Iron |
40 % |
10 % |
4 % |
4 % |
4 % |
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Vitamin
B6 |
15 % |
15 % |
15 % |
15 % |
10 % |
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Thiamin |
6 % |
10 % |
8 % |
6 % |
6 % |
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Niacin |
8 % |
10 % |
unavailable |
unavailable |
unavailable |
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Folic
Acid |
4 % |
4 % |
unavailable |
unavailable |
unavailable |
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