In a clean bottle add 60g flour (rye/ whole wheat/ all purpose-whole wheat mixture) (½ cup) and 90g (⅓ cup) water and loosely cover with kitchen towel or cloth and keep aside for 24 hours.
Day 2- 4
Stir the mixture first and then take out 55 g from your yesterday’s mixture (discard the rest) into a new bottle and add 60g flour (½ cup) and 90 (⅓ cup) water) and keep aside for 24 hours. Every time use new bottle
Day 5- Day 10
Now you are going to feed twice. 15 g yesterday starter mix + 20g flour+ 20g of water and after 12 hours add 20 g flour + 20 g water. Do the change of bottle only once means when you are adding the starter mix. First feeding always use new bottle
Day 11 – Day 14
You can start feeding thrice means 6-hour intervals, if you see good activity. 15 g yesterday starter mix + 20g flour+ 20g of water and after 6 hours add 20 g flour + 20 g water. Make sure to use larger container as you see the up and down activity.
When your starter is ready you should see plenty of bubbles, both large and small.
You can start baking bread.
If you want you can do a float test, means take a teaspoon of active starter and add it to water and if it floats. But I don’t believe in it. The starter is ready means it is ready you know it.