I recently posted a picture of our sourdough bread. Thought I'd give a bit more info about how we got our starter....
Actually, it's quite easy to catch your own sour dough starter. Mix about 1 cup of water and 2 cups of flour in a non metal bowl, cover loosely w/ a light towel (and possibly a rubber band) and sit the bowl outside on your porch. (The towel is just to keep critters out...it isn't necessary!) (I use
this container, bought at my local Cash and Carry.) Check it every day or so, and if you begin to see bubbles, you've caught something! I would add a cup of water and about 1.5-2 cups of flour to feed it. If your container gets too full, pour some out and then feed it. I actually caught my yeast in my kitchen....don't know what that says about my kitchen...maybe I should've left that part out! I believe that if you use some rye flour in the beginning, the yeast seems to like it a bit better, and you may catch something more quickly. When my starter was starting, I used strictly freshly milled whole wheat flour.
When you are sure you have a good bubbly mixture bring it inside and use it/refrigerate it. If you like the way it smells, you will like the flavor. There are numerous recipes on the internet calling for sourdough starter. You can see if something looks interesting and give it a try. We sort of wing it w/ recipes - We've made homemade bread most of my married life, so I have a feel for what I need to add. When we make waffles, I just pour some starter in a bowl (can be metal at this point - just not for the starter you are saving!) add a couple of eggs, a bit of salt, sugar, milk and flour til it has the consistency I want. Then I feed the remainder w/ 3 cups of water, 1 Tablespoon of salt, and 7 cups of flour. You may have to adjust your amounts recognizing that I am cooking for a family of 12. I may keep larger amts on hand than you would have to.
I have no experience w/ storing the starter. Ours is continually on the kitchen counter because we use it and feed it just about every day. I
think when you use it, you feed the remainder and let it sit out for a day before refrigerating it. Make certain after feeding it that you have a container large enough for it to rise...it takes hours for it to finish rising, so don't be fooled if in an hour, it hasn't increased in volume. When it flattens off, it is time to go in the refrigerator - I think.....
I would like to recommend a book called
Healthy Breads in Five Minutes a Day. I was able to check it out from our library. It has a recipe for a general dough. This dough can sit in your refrigerator for some time and is relatively ready to be used. The longer it is in your fridge, the more of a sour tendency it has (even though it was made using commercial yeast) This is a convenient and unintimidating way to have homemade bread.