Made my 1st batch of yogurt last week. I used a plain Hollands Dairy yogurt for my starter. Had my 5 yr old daughter helping me along.
Cultured it for 12 hrs in my Nesco dehydrator, which I used cardbourd to build up the walls and just stuck the heater on top. It got it way too hot, so I stuck it half way on, and vented the cardboard.
Yogurt came out tasting like a cross between sour cream and yogurt. Not bad, but not totally great, would be ok for adding to other meals.
I read on a few sites that that sour cream taste could be from the 12 hrs I cultured it, so I just did my 2nd batch, and am planning on stopping it much sooner. I also added some (real) vanilla, and a little sugar to try to make it closer to what I'm used to buying. Daughter ate some of my first batch, but no one else in the family would touch it.
I did a search for yogurt recipes and I found one site which had this story about how when immigrants came to America, those who brought yogurt starters, would find that the immigration service would toss the yogurt. One woman soaked some cloth in yogurt to get the culture into the fabric, dried it and packed it in with clothes. When her baggages where checked, they just saw clean clothes and sent her on her way. Once settled in America, she then soaked the cloth back into warm milk to extract the cultures. With rotation someone could try this for a survival kit.