Yogurt - cooking recipe

Ingredients

1 qt. whole milk or low-fat milk
2 Tbsp. yogurt (start from previous batch or commercial type)
1 small can evaporated milk (optional)

Preparation

In a deep saucepan, bring milk to a rolling boil, stirring occasionally.
Remove pan from heat; add evaporated milk.
Cool to lukewarm.
Dissolve 2 tablespoons yogurt (starter from previous batch or from commercial type) in 1/2 cup of lukewarm milk, blending thoroughly.
Add this to remaining milk, stirring constantly.
Pour milk into 1-quart heavy bowl or individual glasses.
Cover with cloth, let stand in a warm place for 6 to 8 hours or until thick.
Chill before serving.