Well, just in case I haven't told you I really do get impressed with the Amish. I found this on a Amish page I was looking at.
1 teaspoon dry yeast
1/2 cup warm water
2 cups granulated sugar
1 quart hot water
4 teaspoons root beer extract
Dissolve yeast in 1/2 cup warm water.
Mix together dissolved yeast, sugar and root beer extract in gallon jar.
Fill jar with warm water and stir until all ingredients are well combined
Set in warm sun for 3 to 4 hours
Refrigerate 12-24 hours
I remember as a little girl my Mom making homemade rootbeer. But, she bought rootbeer in a bottle then added water and yum it was really great. Can't find that anymore.