Day 1 : In a glass or ceramic bowl, mix the starter ingredients. Leave on the kitchen counter uncovered, don't refrigerate.
Days 2,3, & 4 : Stir well with a wooden spoon
Day 5 : Stir and add 1 cup milk, 1 cup flour and 1 cup sugar. This is called "feeding the Starter."
Days 6,7, &8 : Stir with a wooden spoon
Day 9 : Stir and add another 1 cup milk, 1 cup flour, and 1 cup sugar, stir well.
Day 10 & 11 : Stir well
Day 12 : Ladle 1 cup of starter into each of 4 containers and refrigerate. Use one to make the bread recipe, keep one to use another time, and give the other two to friends.
Now you're ready to bake! If you don't bake on this day, add 1 teaspoon sugar and refrigerate the mixture. The sugar will feed the yeast and keep it alive. Date the jars, and every 10 days remove the starter from the fridge, transfer it to a bowl, and feed it the usual combination of 1 cups of each of milk flour and sugar. Leave it outside the fridge uncovered for 2 days, then either bake it or divide it among friends. and always save some for yourself.