Yogurt, yoghurt, or yoghourt is a food produced by bacterial fermentation of milk. The bacteria used to make yogurt are known as "yogurt cultures". Fermentation of lactose by these bacteria produces lactic acid, which acts on milk protein to give yogurt its texture and its characteristic tang.
Questions tagged [yogurt]
202 questions
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When making yogurt, why doesn't bad bacteria grow as well?
I've been making Yogurt and Coconut Yogurt for a long time. I've always wondered why one can't leave milk out for more than an hour or so without it going off, yet when adding cultures or probiotics all of a sudden this isn't a concern.

Ben
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Yogurt + tahini = paste?
I had dip made with Target store brand plain nonfat Greek yogurt, minced garlic, powdered ginger, lemongrass paste, salt, and nothing else; the dip was soft and creamy. I added some Sprouts store brand tahini, which is VERY runny, about the…

Very Amateur
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What causes yogurt in sauces to split? How to prevent it?
A lot of my favorite curry recipes have a yogurt based sauce in them, but on a pretty regular basis when I make them, the yogurt ends up splitting into basically curds and whey. What causes that, and how can I prevent it?
As an illustrative example,…

cabbey
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How to make yogurt without any existing yogurt
How does one make yogurt when there isn't any existing yogurt to use as a starter?

Error 454
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Why is DIY yogurt not as stable as sourdough starter?
I have a sourdough starter which is now close to 15 years old. It has survived everything - including long pauses where it stood in the fridge for over a month or longer. It is incredibly stable and very hard to kill (at least I was not successful…

AnoE
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Can UHT milk be used to make yogurt?
So I know you can't use UHT milk to make cheese, because of the way the proteins get denatured at that temperature. But can you use it to make yogurt?

Daniel Bingham
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How do you know when a cultured item is no longer safe to consume?
How do you know when yougurt (for example) is no longer safe to consume?
Do I know it from the taste, how it smells, or something else?

apaderno
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What type of yoghurt should I use for making curry?
I've seen a lot of recipes specifying "yoghurt" when making an indian-style curry, but very rarely do they specify what type.
The problem is compounded for me in that I live in a country where I don't speak the native language, and their concept of…

victoriah
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Why is it recommended to mix yogurt starter with a small amount of milk before adding to the entire batch?
When making yogurt with Yogourmet yogurt starters it is recommended to boil the milk, bring it down to 110 degrees F, then take out a cup of milk and mix the starter, then add that mixture back into the main batch of milk and let it culture.
What is…

Adam Thompson
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Making yogurt without heating milk?
Most recipes for yogurt indicate that you should heat/boil the milk, then cool it.
Is it possible to skip this step, and use milk straight from the fridge? Would the result be terribly different?

Felix
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How can I get homemade yoghurt to thicken properly?
Pretty much always when I make yoghurt myself, the homemade version comes out much thinner, much more liquid, than the store-bought yoghurt that is used to produce my yoghurt. How can I make it thicker? Should I increase/decrease the temperature?…

please delete me
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Why does blending blueberries, milk, banana and vanilla extract cause the mixture to have a yogurty consistency?
A cup of milk
A cup of blueberries
A banana
Three shakes of vanilla extract liquid
The original plan was to have a milkshake, but the result is quite a nice desert! Like a no cook yogurt.
Looking more closely, the milk has curdled, but not like…

Ant Kutschera
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In baking, can yoghurt replace butter?
By baking, I mean cakes / muffins / biscuits.
This is mainly to cut down on fat.
I've tried replacing butter with yoghurt in all of these and the results were OK.
Are there any cases where it's not a good idea?
I generally replace with equal ratios…

rbrayb
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How to do frozen yogurt
I would like to do at home frozen yogurt. Do I have to use an ice cream machine, or is there a technique to prepare it without a machine?
PS: I don't really like ice cream without the machine as the ice crystals are too big. I wonder if the highest…

Wizard79
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Does the yogurt set from 500 ml milk result in 500 g yogurt?
I want to prepare 500 g yogurt. I have 500 ml skimmed milk.
So, will the resultant yogurt be of 500 g?
If not, then how much skimmed milk do I need to get 500 g yogurt?

Aquarius_Girl
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