Yogurt - cooking recipe

Ingredients

1/2 gal. whole milk (paper carton not plastic jug)
1 c. commercial plain yogurt

Preparation

Bring milk just to a boil and remove immediately from heat; let cool until lukewarm (better to be too cool than too warm). Mix yogurt with one cup of the milk in separate bowl.
Add to remaining milk and mix well.
Pour into clean, covered glass container (such as large pickle jar).
Cover and place under several layers of blankets or a folded sleeping bag to retain heat for 12 to 24 hours.
Refrigerate for several hours before serving.