TOOLS & PREP
So here's the skinny on the tools you'll need:
2 (32 oz or 1000ml) wide mouth mason jars
Flour sack cloth dish towels
Measuring cups
Long handle wooden spoons
Plastic spatulas
Covered bowls with lids
Flexible turning spatula (for making sourdough pancakes with the starter discard ... in a separate recipe)
Allergy friendly flour of choice (whole wheat, all-purpose or gluten free measure for measure). *Gluten free blend, I had success with King Arthur brand.
Roasting Pan
Dutch Oven
Sourdough Bread Baskets
Sourdough Lame
If you are starting your sourdough, plan to be at home for the next couple weeks. You can always stick her in the fridge if you need to leave town, but it's ideal to get her "going" and "growing" to be able to feed her a couple times a day for about a good week or so.
PROCESS
Day 1
Today you will get a clean glass jar, add 1 C flour and 1/2 C water. When adding the flour and water whether on day one or 5, I usually have to add a smidge more water anywhere from 1T to 1/4 C. You want the consistency to be like cream of wheat or refried beans. Not too watery, and not too thick.
I like to give it a good stir with the handle end of a wooden spoon. I started out using longer forks, but had trouble getting a good handle on it to stir well even through the wide mouth opening. To keep my jar as clean as possible, after each feeding and stirring, I then grab a rubber spatula and give the inside of my jar a quick "squeegie" around the walls to keep it clean. Then you'll simply cover the jar with the flour sack cloth. You can use any towel, I just love these because they are thinner and let more air through while still keeping your starter clear of foreign contaminants. Now let her rest for 24 hours.
Day 2
Discard half of your starter, leaving about 1/2 c of starter in the jar. I like to discard my starter excess into a mixing bowl that has a lid. I save it from my evening discard (once you get to day 3 and on) and my morning discard, to make sourdough pancakes! I don't secure the lid all the way, just enough to allow air to escape, but again keep foreign matter out.
Next, you will feed your girl! Same amounts as the original starter, 1 C flour and 1/2 C water. Again looking for that cream of wheat or refried bean consistency. Give a stir, squeegie clean the sides and cover with a flour sack cloth. Let her rest another 24 hours.
Day 3 to Approximately Day 5 ... or perhaps even up to 14 Days
Repeat as in Day 2, discard and feed. Same quantities. However, today, you will begin feedings two times a day. Try to get the 2 feedings as close to 12 hours apart as possible. I usually do mine about breakfast time, and then before going to bed - about 9am and 9pm.
You will continue feeding your starter twice a day until she doubles in volume in roughly 6-8 hours. There is a float test you can do: take a teaspoon of starter from the top of rise and drop into a glass of water. If it floats, you are ready to make bread. You can give your starter one more feeding once it has reached this stage, if you'd like.
BREAD MAKING DAY
When you are ready to bake your bread, you will wait until about 6-8 hours after the last feeding, at it's peak rise height. Remove however much starter your recipe calls for, most recipes call for no more than 1 C starter. If the recipe calls for more than 1 C, you can give it 1-2 more feedings WITHOUT discarding, to grow your starter recipe amount.
STORAGE AND UPKEEP
Now you will place your starter in it's longterm home. It may be that same wide mouth mason jar, and a LOOSE fitting lid. Plan to feed your starter once a week, using the same process of discard and feeding as from Day 1 and on.
TIPS & TROUBLE SHOOTING
If your all-purpose flour fizzles out, feed her with whole wheat. Whole wheat gets a lot more action in a starter than all-purpose does.
For a stronger sourdough flavor, use 1 C starter in place of 1/2 C water and 1 C flour in the bread recipe.
Make pancakes or other sourdough discard recipes - waste not, want not!
The rise and days to be ready for bread making can vary based on temperature and other factors. Be patient. Just like with a child, all children have a different pace. So does your starter. If it is fizzling out you can try adding whole wheat flour, try finding a darker warmer area for it to rest in.
When you pull the starter out of the fridge to use after storing, if it seems to have fizzled out, try feeding it for 2-3 days, 2 times a day, to bring it back to life.
If you see discoloration, mold or an "off" smell, bacteria may have been introduced and you will need to discard and start over.
If you feel as if you have been doing everything right and need an extra boost in the activity, you may for one feeding give pineapple juice in lieu of water, to boost acidity and action.
After the first introduction of feeding to establish "ready for bread making" starter, you can alternately share your "discard" with friends so that they can use your starter, or use it in other sourdough recipes like pretzels, bread etc.