This is so easy to make and beats most of the common brands in taste (and price!). From Andrea Nguyen's site- Viet World Kitchen.
Cooking time is waiting time.
NOTE:1) The milk can in which the condensed milk comes is used for measuring.
2)The yogurt you end up with will take on the flavour of the starter you use. I personally prefer an organic Greek yogurt starter.
3) If you prefer a thicker yogurt, add 1/3 cup dry milk powder to the room temperature water