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Can salt free butter still be used after expiration? It has been frozen in the refrigerator for more than a year. I don’t know if it can still be used?

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cannot. Expired butter will breed harmful bacteria, which is bad for human body, and expired butter will lose nutrition and produce peculiar smell, so it can’t be eaten

edible efficacy

1. Fat soluble nutrients in milk exist in milk fat, including vitamin A, vitamin D, a small amount of vitamin K and carotene. Therefore, butter is an excellent source of vitamin A and vitamin D, and its yellow comes from carotene


2. Butter nutrition is the first of dairy products. The butter made from milk is rich in nutrition, including vitamins, minerals, fatty acids, glycosylated nerve phospholipids, cholesterol and butter. Cooking is also very fragrant. You can fry fish, fry steak, bake bread and spread bread. It is not only rich in nutrition, but also very mellow, delicious, soft, sweet and delicious

3. Butter is extracted from milk. It is rich in amino acids, protein, vitamin A and other vitamins and minerals. It can supplement a lot of nutrition for body development and bone development. It is a rare health food for teenagers

4. Butter is rich in copper. Copper is an indispensable micronutrient for human health. It has an important impact on the development and function of blood, central nervous system and immune system, hair, skin and bone tissue, brain, liver, heart and other internal organs

5. Butter is rich in fat, maintaining body temperature and protecting internal organs; Provide essential fatty acids; Promote the absorption of these fat soluble vitamins; Satiety

contraindications and side effects

in terms of diet, butter is suitable for all ages, 10 ~ 15g each time. Butter is usually suitable as an adjunct to cooking food. But when you eat butter, you should pay attention to pregnant women, obese people, diabetics and so on, and men should not eat too much, because too much intake may lead to hypertrophy of the prostate. p>

extended data:


the requirements of butter on packaging are mainly to protect its fragrance beads, tissue, appearance, moisture and color. Airtight packaging is very important. It can not only protect its fragrance from loss, but also resist the pollution of external odor, because butter is easy to absorb foreign odor. Because of the emulsion characteristics of butter, the fat is particularly vulnerable to oxidation and rancidity. p>

the residual trace metal ions on the machinery and equipment of the processing plant will also make the butter “fishy”. Butter is usually packaged with parchment, aluminum foil /sulfuric acid paper or the composite of aluminum foil and oil proof paper. Parchment is brittle and should contain more than 9% moisture. It should be stored in a clean place without dust and with a humidity of 50% ~ 80%

if it is too dry, the parchment will be brittle and easy to break during packaging. On the contrary, if it is too wet, it is easy to grow mold and pollute the butter. Although parchment is oil resistant, it can still penetrate oxygen. In addition, its translucency will transmit light, which is easy to promote the oxidation of butter. For long-term preservation, aluminum foil composite is still the safest packaging

however, the composite material of aluminum foil and plastic film is not ideal, because most plastic films have air permeability, resulting in the loss of butter flavor and poor oil resistance. Aluminum foil /paper composite material is preferred. Paper can not only strengthen and reduce the thickness of aluminum foil, but also improve the process operation performance of packaging machine machinery. European countries generally use aluminum foil /parchment composite materials to pack butter


Baidu Encyclopedia – butter

simple homemade pizza (with pictures)

========================================================================================== Crust material (8-inch pizza plate): 2G dry yeast (2 /3 tsp) 90ml warm water
150g medium gluten flour, 1 /2 tsp sugar, 1 /4 tsp salt, 10g olive oil (salad oil can be used instead; 15g butter can also be used as preferred)
I don’t know exactly how big 8 inches is, so I use the baking plate brought by the microwave oven. For the ordinary green Tiangou dumpling powder used for flour, attention must be paid to ensure that the yeast is easy to use. The yeast is easy to expire after a long time, which makes the flour unable to initiate, and the salt is reduced to 1 /8

2 Dissolve the yeast in warm water, stir it evenly, mix it with flour, sugar and salt to form a dough, and then knead the olive oil into the dough (it’s not easy to knead at the beginning, but it’ll be easy to knead later. ~]@r!
however, the dough for pizza is not as particular as bread, and it’s OK to add the oil at the beginning). It’s ok if the butter doesn’t melt, but just mix it when kneading

3. Knead the dough with oil, cover it with plastic wrap and put it aside for fermentation
you can also put a microwave oven and put a cup of boiled water in it to generate heat and moisture to help fermentation (but the requirements for pizza crust are not so strict, so you can grasp the degree of fermentation according to your taste)

the degree of dough initiation should be about twice the size of the original dough, that is, twice the size. In total, you are dizzy
4. The dough was left to ferment and began to prepare pizza juice and other materials. These are the ingredients of pizza juice: 1 /4 onions, 3 cloves of garlic
(onions and garlic can be increased or decreased according to preference), 8g olive oil (can be replaced by butter or salad oil), 2tsp tomato sauce and 3tsp water (note that tomato sauce and ketchup are not the same thing!)
sugar 1 /2 tablespoon salt 1 /8 tablespoon black pepper 1 /4 tablespoon oregano leaf (pizza grass) 1 /2 tablespoon (don’t add it if you don’t have it, it tastes better)
occasionally put a clove of garlic, 2 tablespoons of water and 1 /8 tablespoon of black pepper. If you put too much, it tastes strong and doesn’t like it

4. Chop onion and garlic (it’s better to chop a little)

5 Heat the wok, add olive oil, add chopped onion and garlic, and fry until fragrant (the color starts to turn yellow)
add tomato sauce, water, sugar, salt, black pepper and pizza grass,
leave to boil, Turn off the fire to make pizza juice (for convenience, I mix all the ingredients except onion and garlic in advance,
and add them together when adding them to avoid panic. Hey, hey…
this is the prepared pizza juice. Don’t fire too much, just slow down. The amount is about half a bowl of a small bowl.

6. These are the ingredients to be added to the pizza crust. Shredded mozzarella cheese (80g), Shredded red pepper, shredded ham and sweet corn (you can add whatever you like, and you can control how much you like. These are more casual); Cheese is the key. When you save it, put it in the refrigerator for freezing. When you make pizza, take it out 30 minutes in advance, soften it a little, and wipe it into silk with an ordinary eraser of radish and potato. It doesn’t need to be too fine. Probably wipe out a flat plate or so

the sweet starch free sausage of Taiwan flavor used for shredded ham is not delicious in the field with too much starch. These materials should not be diced, but must be shredded. I also put some pineapple meat and shredded pork floss
don’t have too many materials. Each one can be covered with a thin layer

7 Take out the dough, round it, put it on the pizza plate and relax for 10 minutes

8 When the dough is relaxed, push and push by hand until it is covered with the PiZZ plate,
into a cake. Pay a little attention to the edge and push it up. Pierce the hole with a toothpick. The bottom of the baking pan is occasionally coated with some oil and then put some dry noodles, otherwise it will be too sticky

9. When pizza juice is applied to the dough cake, the edge will not be applied. After wiping, spread some shredded cheese, about 10-15g

10. All the prepared materials except the remaining shredded cheese are spread on the cake skin
brush the edge of the cake with egg liquid
when spreading, spread a thin layer of each kind, not too much

11. Preheat the oven at 200 ℃
put pizza into the middle and lower layers of the oven at 200 ℃, put it on the fire for 15 minutes, spread the remaining cheese shreds,
put it into the oven for about 5 minutes, and then the cheese shreds melt away.
there are only upper tubes in the oven of the microwave oven, but there are no lower tubes, so after baking for 10 minutes occasionally, (don’t forget to put it on the support, which is closer to the baking tube), take it out and put it in the pan with the baking pan to heat under the cake skin, When you feel almost done, finally put all the milk on it and bake it in the microwave oven for 5 minutes, and you will succeed.

the success of baking is to ensure that the skin and sink are not separated, and the water is just right, not too much water, so don’t add anything at will, and pay attention to the combination of dry and wet
I hope everyone will succeed

a simpler way is to buy a pancake, sprinkle it with vegetables, sausage and cheese, and put it in the microwave for a few minutes. It doesn’t taste bad.
if you have any questions you don’t know, you can ask me online or leave a message. I’m a professional in this field. We’ll try our best to answer for you.

No, expired butter will breed harmful bacteria, which is bad for human body, and expired butter will lose nutrition and produce peculiar smell, so it can’t be eaten
butter is processed from milk. After fresh milk is stirred, the thick object on the upper layer is filtered to remove part of the water. It is mainly used as seasoning. It is rich in nutrition but high in fat, so don’t eat too much
in the 5th century B.C., the Mongols in China had been mainly engaged in animal husbandry, and various production technologies of dairy products were mature and spread at home and abroad. Foreigners call butter, which is the edible oil refined from the milk called cream in China. Mongols are the first people in the world to process edible butter.

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