I've been wanting to post this for a while but everytime I made yogurt it just didn't work out well for me to take pictures of it as well!

Now, be sure you have a pencil ready as the ingredients are extensive. Milk and yogurt. 
What you see here is whole, raw milk and the left over yogurt from my last batch.

If your making your first batch of yogurt, or you ate all of your last one this is my favorite brand to use. I've tried multiple other brands and none of them work near as well.  I usually use plain, but it doesn't matter if it's flavored if you're using Seven Stars brand.

Pour your milk into a stainless steel pot....

And heat. I don't know if it's supposed to be heated at a low heat, but I always heat on high, stirring frequently to keep it heating evenly.

Heat till just before boiling point.

If you wear glasses like me, this is means it's ready....

For a more precise measure, it should be 180 degrees Fahrenheit.

Remove from heat. Go over to your sink at make sure it's clean cause you're gonna give this baby a bath....

... in ice water! Throw a few pitchers of ice cubes in, and fill with cold water. You want enough that it's level with the milk when you set the pot in the sink.

Like so. Stir and swish the water around till it cools to around 100. I never check this temp with the thermometer, I use the 'baby bottle' test. Dribble some on the inside of your wrist and if it burns it's too hot, it should feel just barely above lukewarm.

While it's cooling...

Measure out your starter yogurt. I have about 2 cups here. I use anywhere from 1-3 cups, but I like 2... it's a nice round, even number!

Once your milk in the pot has cooled, and NOT BEFORE, add your yogurt and mix thoroughly.

Now, up to this point I've only improvised a wee bit. In this next step, the incubation period, I go a bit crazy!

Get yourself a box or cooler, plenty of towels and a heating pad. If you don't have a heating pad, throw your towels in the dryer on high to get them nice and hot and be sure to use a cooler.

While your yogurt and milk are meeting eachother and making their peace with one another, place a towel in the bottom of your container, add the heating pad and turn it onto high.

I actually put the heating pad under neath the towel in this case because it's a thermo picnic cooler and I don't need to worry about the heat escaping.

Get your containers ready for the yogurt.

Fill 'em up!

Place them in your homemade incubator and add towels all around and on top.

Now comes the most important part of all. Leave them be for at least 4 hours. And under threat of death warn everyone to NOT JIGGLE the incubating yogurt.  If it gets jiggled one to many times (and it's really tempermental about how often is too many times) it will seperate and you'll have lumps of yogurt swimming in yellow whey... it looks disgusting!

After 4 hours, gently open on container and check the set... use a spoon to push down on the edge. I like my yogurt really thick so I usually let it sit 6-8 hours.

When it's done incubating, pop it in the fridge and enjoy!