Unopened half and half can sit out at room temperature for up to 2 hours.
After 2 hours, half and half should be refrigerated.
Does Unopened Half And Half Need To Be Refrigerated?

Yes, unopened half and half needs to be refrigerated.
How Long Does Half And Half Take To Go Bad?
Half and half will go bad after about a week.
https://www.stilltasty.com/fooditems/index/18287
Does Half And Half Need To Be Refrigerated After Opening?

Yes, half and half needs to be refrigerated after opening.
If you don’t refrigerate it, the cream will separate from the milk and it won’t taste as good.
Does Half And Have Need To Be Refrigerated?
No, it does not need to be refrigerated.
However, it is recommended that you keep it in a cool and dry place, out of direct sunlight.
How Do I Know If My Half And Half Is Bad?

If your half and half is bad, it will usually have a sour smell, and it may also have a slimy or chunky texture.
If you see any signs that your half and half has gone bad, you should throw it away and not consume it.
Does Ultra Pasteurized Half And Half Need To Be Refrigerated?
Yes, it does.
Ultra-pasteurized milk is milk that has been heated to a very high temperature for a very short time. This kills bacteria that cause spoilage and disease, and extends the milk’s shelf life. Ultra-pasteurized milk is usually found in aseptic containers and does not need to be refrigerated until it is opened.
Can Spoiled Half And Half Make You Sick?
Yes, spoiled half and half can make you sick.
Symptoms of food poisoning from spoiled half and half can include nausea, vomiting, and diarrhea.
If you experience any of these symptoms after consuming spoiled half and half, seek medical attention immediately.
What Is In Non Refrigerated Half And Half?
Non refrigerated half and half is a mixture of milk and cream.
The milk is typically homogenized, meaning that the fat globules have been broken up so that they stay suspended in the milk rather than rising to the top. The cream is also homogenized, meaning that the fat globules have been broken up so that they stay suspended in the cream rather than rising to the top.
What Temperature Should Half And Half Be Stored At?
Half and half should be stored in the refrigerator at a temperature of 40 degrees Fahrenheit or below.
https://www.usda.gov/foodsafety/consumer-advice/food-and-food-safety
How Long Does Half And Half Last After Opening Reddit?
Half and half will last for about a week after opening.
https://www.reddit.com/r/AskCulinary/comments/4s4s7b/how_long_does_half_and_half_last_after_opening/
How Long Can Heavy Cream Sit Out?
Heavy cream can sit out for up to two hours.
After that, it should be refrigerated.
Is Half And Half Really Half Cream?
Half-and-half is a mixture of milk and cream.
It typically contains 10.5% to 18% milk fat.
Why Does Half And Half Last So Long?
Half-and-half is a dairy product that is made up of half milk and half cream. It has a high fat content, which helps to preserve it and give it a long shelf life.
The milk fat in half-and-half protects it from spoilage by bacteria, and the cream adds richness and body that helps to keep it fresh tasting.
How Do You Save Half And Half?
Half-and-half can be saved in the refrigerator for up to two weeks.
To extend its shelf life, you can freeze half-and-half in an airtight container for up to six months.
Do You Need To Refrigerate Coffee Creamer?
Coffee creamer does not need to be refrigerated.
Coffee creamer is made with milk, cream, and sugar, and sometimes flavoring. The milk and cream in coffee creamer can spoil if it is not refrigerated.