When baking bread two ingredients must be done by weight instead of volume. Flour and water.
My basic bread machine recipe, I call it 33% whole wheat bread. I have not bought an actual store bought loaf of bread in years. My recipe is reliable and works between whatever bread machines I've owned. Need a bread machine? Go to a thrift store. You will find one.
240g bread flour.
Add whole wheat until the scale reads 352g. No whole wheat flour? Then use 360g bread flour.
1 1/2 table spoons of sugar.
1 tablespoon of dried milk
1 teaspoon of salt
1 teaspoon of yeast
1 1/2 teaspoons of margarine
252 grams of water.
Set your machine to produce 1 1/2 pound loaf.
The temperature and volume of your water really effects the quality of your bread. Experience will get you the right temperature by feel. Even then, the result might be hit or miss.
Water too warm or excess volume, the bread is wormy and has pocks in the texture. Too cold or not enough water the bread is stiff, dense and short. +/- 2 grams of water or the temperature can make the difference between a picture perfect loaf or one that is short, dense gnarled or airy, rose too high then collapsed, or wormy. A lacking loaf of bread isn't going to kill you.
I've found that the temperature/volume of water is the main variable, followed by salt, and finally by yeast volume.
This thread is about cultivating your own yeast.... In practicality this is not he biggest factor. Go to Sams club. You will get a ridiculous amount of yeast at a very low price. Yeast in your fridge will last an extremely long time once opened. The expiration dates don't mean anything. You can compensate for old yeast. If society collapsed and you are out of flour. You are dead. The dried yeast has lower storage density than the flour and can be stockpiled more readily than flour. You want to learn how bake bread before the crisis happens.
Dried yeast is incredibly robust. I've baked high hundreds to thousands of loafs to my lifetime. I've never attributed a bad loaf of bread to defective dried yeast.
Your source of flour.... Places like Gordon Food Service in the USA sell large sacks of high gluten flour. Place it in your chest freezer for a week to kill meal worms. Worm infestation of your pantry is a real risk.
Have my preps been tested? During the 2020 scamdemic, Yeast. Gone. Bread flour in the grocery store... Gone. The hoards didn't think to deplete to flour in GFS, but I made sure I kept 2 sacks in reserve and had two large packs of yeast from Sams Club. For some reason my inner voice told me I must buy this before 2020 came down. This lasted me for the duration. Margarine... Gone . There were weeks without margarine in the grocery store, but I foresaw the panic and kept an inventory of six packages in my chest freezer. Salt, not an issue. Sugar.... There were intermittent shortages. Dried milk, this was gone as well. This is shelf stable and usable beyond expiration dates. The impact of the recipe is that this is optional can can be substituted for milk heated 80 degrees Fahrenheit.
In case of nuclear holocaust, I know I'm going to die. If you can bake bread over a campfire or you got massive reserves of fuel to run a genny or fire an oven, my hat is off to you.