Breads with sourdough

1 cup warm water 1/2 cup sugar 3 tablespoons instant potato flakes 1 (1/4 ounce) packet yeast (Only if you are making basic starter for the first time) 1 FOR[...]

1/2 tablespoon dry yeast 2 cups water , divided 1 3/4 cups rye flour, divided 1 small onion , peeled and cut in half 1 The starter must be made 48-72 hours in[...]