After opening the packaging, if the milk is placed for a long time, it will deteriorate and cannot be eaten. It's a pity to pour it. Don't worry. The expired deteriorated milk still has utilization value. Let's follow this website and have a look.
Expired milk is best not to drink
Generally, the milk sold in the market has a way back for the majority of consumers in the formulation of the shelf life. If you buy a bottle of milk with a shelf life of 7 days, its actual shelf life may be 10 days. The milk cannot really break down on the day when it reaches the shelf life.
Therefore, if the milk has reached the shelf life, but judging from all senses, it has not deteriorated, then the milk can still be safely drunk. It's not worth drinking after four days, but it's best to drink it after five days.
When the milk is heated, the surface with a layer of milk skin and milk fat is fresh milk, and the surface with tofu flowers is old milk and deteriorated milk. If the taste is bitter, sour or has other peculiar smell, it indicates that the milk has deteriorated. This identification method is suitable for fresh milk, high calcium milk and flavored milk drinks, while yogurt and lactic acid bacteria drinks should not be heated.
Don't throw out expired milk. It's useful
1. Wipe the composite wood floor
After the expired sour milk is diluted with water, sprinkle it on the composite wood floor and wipe it with a mop. Because lactic acid is a natural detergent. In addition, milk contains substances such as protein and fat, which can form a protective film on the wooden floor, which can not only make the wooden floor bright as new, but also protect the surface of the floor and reduce wear and scratches.
When wiping the wooden floor, first pour the expired milk into the washbasin, then dilute it with twice the water, and then dip the dishcloth wet and wring it dry to wipe the floor. If there is a large amount of expired milk, you can wipe it with milk once a week. The oil in milk also uses the floor to maintain the original color, which is not easy to decolorize and change color, and it is not easy to deform the floor.
2. Wipe leather shoes to prevent dryness and cracking
Remove the dirt on the vamp, dip the expired milk with gauze and apply it evenly on the vamp. After it is dry, wipe it with dry cloth. The vamp can be as bright as new, and another function is to prevent the leather surface from drying and cracking.
3. Wipe leather furniture
You can wipe leather furniture with expired milk to restore its luster and repair small cracks.
4. Remove ink stains from clothes
Wash the clothes with clean water, then pour in expired sour milk and gently scrub to remove the ink on the clothes.
5. Remove oil stains
After repairing the car, your hands will be stained with oil and dust and become very dirty. At this time, mix oats and milk into a paste and wipe your hands, which can not only remove dirt, but also moisturize your hands and make your hands softer and tender.
6. Remove rust spots and stains
Use sour milk (or add some vinegar to the milk) to soak the silver, which can remove the rust spots and stains on the surface of the silver. Rinse and dry after soaking. It can also be used to Polish furniture. While deeply moistening wood, its acid composition can also remove dust and dirt. The effect is very good.
7. Repair cracks in porcelain
If there are slight cracks in the porcelain, you can put it in the pot, soak it in milk, heat it to boil, then turn down the fire and simmer over a fine fire for 45 minutes. The protein in the milk will combine with the clay in the porcelain to repair the crack.
8. Hair care and lubrication
Dilute the expired yogurt with water, and then wipe it evenly on the washed wet hair like a conditioner. After a little massage, wash it with water, which will make the hair greasy and shiny.
9. make yogurt mask.
Yogurt contains a lot of lactic acid, which is mild, safe and reliable. Yogurt mask is the use of lactic acid to play the role of peeling mask, daily use will make the skin tender and delicate. The practice is also very simple, just a little effort.
Ingredients: a cup of yogurt, an appropriate amount of flour and a small bowl.
Practice: 1, put the right amount of yogurt and flour in a small bowl, and mix it into a thick yogurt paste. (do not spread too thin, otherwise you can not smear the mask) 2, evenly applied to the whole face, after 10~15 minutes, wash with warm water.
Efficacy: yogurt mask can be used as a face wash. It is not necessary to purposely clean the face before and after use. After 5 ~ 5 times of use, the skin will feel brand new.
10. Fertilize flowers and plants
If the expired milk has obvious sour taste, it can be used to water the flowers. You can dig a small hole in the middle of the flower soil and bury the milk so that there will be no bad smell. It should be noted that there should not be too much milk. It can only be used for the second time in about a month.