The creme fraiche turned out very good!
Here’s what I did. I put it in very warm (almost hot) tap water, and placed in oven that was turned on for only 15 minutes. Left it in oven, turned off, over night to sit in residual heat. I had a towel on bottom of jars to protect them from touching hot metal. I used recycled pickle and olive jars
Then next day I removed jars from water bath, placed them in a cupboard, block out light and coldest part of the kitchen, and they sat there one day. This is what they looked like…soft peak formed, and nice sour tasting creme
Then I put them in the fridge and the creme became very very stiff
It is delicious! I will never buy sour cream or creme fraiche ever…this is a much better product, tastier and a whole lot cheaper!