Add new Yogurt recipe

yogurt.md

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+# Yogurt
+
+## Ingredients
+
+- 2 thermos, ½l capacity each
+- thermometer
+- 1l milk
+- 100ml yogurt
+
+## Directions
+
+- bring the milk to 45C°
+- pour the yogurt into the milk
+- wisk well
+- bring the milk to 45C° again (don't go higher than that, please)
+- boil some water (about 100ml) and use it to wash the thermos from inside
+- let the water out and pour the milk into the thermos
+- leave the thermos in the oven(or in any other place whithout air flow) for 12h
+- store in the fridge
+
+## Contribution
+
+- italian boy