Can I drink curdled milk? (Diferences between curdled and spoiled milk)

In this brief guide, we will answer the query, “can I drink curdled milk”? and will discuss the potential uses of using curdled milk.

Can I drink curdled milk?

No, you cannot drink curdled milk. Lactic acid is also responsible for curdled milk’s characteristic sour smell. As dangerous as curdled milk was before it curdled, curdled milk is just as dangerous now. As long as the original milk was adequately pasteurized or sanitary, curdled milk is not harmful.

The protein molecules (casein and others) attract one another as the pH drops and the milk becomes more acidic, resulting in “curdles” floating in a solution of translucent whey. In warm weather, clumping occurs more quickly than in cold weather.

Is curdled milk harmful to your health?

First, we must distinguish between intentional and unintentional curdling of milk to determine whether curdled milk is “good” or “bad”. Beginner’s guide to whey-induced curdling It’s important for popular dairy products such as cheese and yogurt to intentionally curdle milk, according to Scientific American. When it comes to preparing these tasty foods, it’s usually the first step.

In addition to adding heat or acid, milk curdling can be achieved by simply aging the milk for a sufficient period. However, we can all agree that cheese and yogurt producers are to be commended for doing the hard work for us.

A milk carton left in the fridge for too long is more likely to cause inadvertent curdling than it is to cause deliberate curdling. Is it hazardous for our health since it doesn’t seem nice to us? What matters is whether the milk has truly gone bad or not.

First and foremost, spoiled milk can curdle. In addition to that, don’t consume spoiled milk. This exposes you to potentially harmful pathogens, some of which can cause a nasty case of food poisoning. A smell test is required to determine whether your milk has soured. An unpleasant smell is one of the most obvious indicators that milk has gone bad.

When you’re done with that, look at the milk while it’s still in the carton. There’s another indicator that it’s gone bad if it’s curdling in the container. When it comes time to taste test, throw it immediately if the flavor appears wrong in any way. Because you don’t want to risk becoming sick.

But what about coffee with curdled milk?

In some cases, curdled milk in coffee may be different from curdled milk in a carton, for example. Milk that appears to be in perfect condition in its carton — smelling well, looking good, and tasting great — may have a different reaction when it gets into your cup of coffee. Drinking coffee or tea might cause the milk to curdle because the acidity is too high. Most of the time, this happens when you add milk to a particularly hot, or acidic, cup of tea or coffee.

Similarly, non-dairy milk such as soy milk can be affected by heat and acidity, according to Buzzfeed. Even though this curdling isn’t inherently harmful to your health, it isn’t ideal either (who wants to drink coffee with chunky milk in it?). This sort of problem can be readily fixed, which is a positive thing: Just chill your coffee or warm your milk before assembling your delicious morning beverage.

Coffee may also curdle milk if it is ready to become sour. Check your milk carefully before putting it in your cup. Be mindful of the ancient adage “When in doubt, get rid of it”.

In the kitchen, it can still be used

Even though you shouldn’t drink spoiled milk, it’s not completely worthless.

Throw out old milk that has curdled, slimed up, or developed mold. Although there are numerous ways to employ something that’s a touch odd and a little acidic.

One of the following dishes can be made with slightly curdled milk:

·         Baked good-curdled milk may be used in dishes like biscuits and pancakes, as well as scones and cornbread.

·         Soups and stews- Soups, stews, and casseroles might benefit from a dash of soured milk to thicken and add richness.

·         Salad dressing- If you want to make creamy dressings such as Caesar or blue cheese with sour milk then you can.

·         Cheesemaking- Make homemade cottage or farmer’s cheese with sour milk.

·         Tenderize- When marinating meat or fish, use sour milk. This solution can also be used to soften raw grains.

As a bonus, you may use curdled milk to soothe your skin by adding it to DIY face masks or bath soaks. For those who dislike its strong scent, you may add essential oils or other aromatic substances.

Other FAQs about Milk that you may be interested in.

Does Milk Make You Stronger

Does Milk Make Your Teeth White?

Does Milk Stain?


In this brief guide, we answered the query, “can I drink curdled milk”? and discussed the potential uses of using curdled milk.


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WOUTERS, Jan TM et al. Microbes from raw milk for fermented dairy products. International Dairy Journal, v. 12, n. 2-3, p. 91-109, 2002.


Lu, M., & Wang, N. S.  Spoilage of Milk and Dairy Products. The Microbiological Quality of Food, 151–178. 2017.


Centers for Disease Control and Prevention [CDC]. Food Poisoning Symptoms 2022.


Centers for Disease Control and Prevention, National Center for Emerging and Zoonotic Infectious Diseases (NCEZID), Division of Foodborne, Waterborne, and Environmental Diseases (DFWED) [CDC]. Raw Milk Questions and Answers. 2023.