Years ago, I made my own starter. With nothing more than flour and water, I was able to create the basis for magnificent loaves. It was very forgiving, and though a lengthy process, it filled the house with that delicious aroma, and gave me decent loaves of bread for less that $1 each.
That original starter got neglected and eventually died, but I recently obtained another one from Johanna at Green Gourmet Giraffe, and it has reignited my passion for sourdough.
It isn't a spur-of-the-moment thing, though. I grabbed my start from the fridge late last night, and set up a sponge - all the starter from my jar, mixed with 2 cups of cooled boiled water and 2 cups of plain flour. I used cooled boiled water because it ensures the chlorine has dissipated and the starter won't be killed off. I cover it with a clean tea towel, and leave it overnight. In the morning, it has increased in bulk and is ready to be turned into magnificent bread.
I gathered together the rest of my ingredients - salt, honey, rice bran oil, and flour. Today I decided to make caraway rye bread, so I got some dark rye flour, the seeds and some spelt flour.
Into my big stoneware bowl, I placed 4 cups of the sponge, making sure to leave some in the jug to put aside for the next loaves. I added to that 1 tablespoon of salt, 2 tablespoons of honey and 4 tablespoons of rice bran oil. Any oil can be used, and I often use olive oil for a bit more depth of flavour in a plain loaf. And that's where the careful measuring ends. The rest is done by feel.
I left it rise for approximately 6 hours. It's a friendly thing, that is happy to be left on its own for some time! After punching it down, I shaped it. I usually do 2 loaves - either baguettes or rectangular loaves. Today I made one loaf and 5 knot rolls.
Once again, I covered it with a clean tea towel, and left it. This time for an hour, before placing it in a cold oven, set to about 180 degrees Celsius and let it cook until it sounded hollow when tapped. The loaf cracked on the top, and it turns out I used cumin seeds rather than caraway seeds, but it tastes good!