A blade shines in the darkest of the nights
When I was growing up, I never had any yoghurt, didn't know what it was nor taste like till I saw my elder sis giving it to my nephew (when he was little). Yes, yes ... call me mountain tortoise (singlish equivalent to a country pumpkin) ... then again, I did grew up in the countryside. Anyway, ever since I started living in France, I see yoghurt of every imaginable kind in the cold section and I mean a really really wide range of it and they even have sections especially for kids alone. :0 (Ok, note to self: I have to stop yapping like an ignorant idiot) I even started to like the flavoured ones - quite tasty actually - but I haven't quite acquired the taste for plain yoghurt yet ... until I made my own. To me, the plain ones are just too sour for my taste. On the other hand, my in-laws and little one are big fans of plain yoghurt.
Two years ago we got Michèle (my mom-in-law) a yoghurt maker, much to her delight and she did put it to use straight away. However, after they moved to another city, she never quite managed to get her yoghurt right like she did in Nantes. She tried it in Paris - it didn't work. Tried it at my house, didn't work too. She tried several times using different quality of milk (even to the extend of getting fresh milk direct from the local farm) and putting it at different location in her house - didn't work too. She finally gave up and retired her yoghurt machine. Funnily, all this got me very intrigued by this yoghurt making business. To be honest, I was kinda peeved on Michèle's behalf that all her persistent attempts to get her beautiful yoghurt failed. I was determined to prove it can work. There I set out to find out how to make my own yoghurt using the most simple stuff that you can find at home. The most exciting part of this experiment is that it really does works. You should have seen me jumping up and down like a crazy woman early in the morning shouting 'It works. It works, honey. I can't believe it, I have yoghurts.' This went on and off for the next few hours. hahaha
Now before we get to the recipe, let's have a look at why yoghurt is good for us :
The great thing about making your own yoghurt is you can be sure that there isn't any preservatives, artificial colors or flavorings in them unless you add some flavours yourself. It is also cheaper than buying it at the supermarket. Lastly I feel they just taste better.
Making yoghurt is basically growing specific bacteria (hence why we need a yogurt to produce more yogurt). There are many different ways of incubating your yogurt but I chose this method because it's the simplest, hassle free and all the apparatus needed in this process making are easily found in your own home.
Disclaimer: I in no way claim to be health nor yoghurt expert. The below steps are what I gathered and learned from sources on the Internet. I have made yoghurt using these steps a few times with success and my family suffers no unwanted effects from it, however you should know that since the process of making yoghurt involves growing bacteria, it carries some risks.
Making Yogurt in Tropical Climate
The texture is very rich, smooth and creamy like a smoothie. It tastes just right - mild, not too acid. I simply love it. Normally I don't eat yoghurt at all because I find them too sour for me, but the home-made version has really converted me. It is delicious on it's own or savour it with fresh fruits, some nuts, jam, or cereals etc.
You can alternatively put some jams or syrup at the bottom of the jar before filling it up with the yoghurt mixture.
For those who are using a thermometer, the milk should heated up to 82°C (180°F) - beyond this temperature, you'll scorched your yoghurt giving you a bad taste. Once it reaches this temperature, remove it from the heat and let it cool down to 40°C (105°F ). Follow the above steps as usual.
As my kitchen is rather cold, I place my covered cooler bag next to my kitchen heater. Mine took about 11 hours to set and firm up. If your place is warm, then probably you can leave the cooler box uncovered and your yoghurt might only need 9 hours to set.
Some yoghurt recipes add milk powder to make the yogurt thicker. I don't use it. I like the way how this yogurt turns out as in the texture and taste. It is said that the longer you leave the yogurt to incubate, the more acid/sour it tastes.
The issue of yoghurt not thickening
There are several reasons why your yoghurt didn't set, here are the possible reasons: