Sour dough starter is not the same sort of yeast as natural fermented feed. All the yeast you need is floating in the air. Air is more crowded with unseen stuff than we think.
To expedite the fermentation, I use filtered water and add a couple tablespoons of ACV. It will enable the feed to be fermented in only 48 hours. Thereafter, a couple tablespoons of the previous batch of FF will start your next batch and it will be ready in just 24 hours.
I use filtered water because it gets rid of any residual chlorine which slows down the fermentation as yeast has to be numerous enough to overcome it, making the fermentation take longer.
To expedite the fermentation, I use filtered water and add a couple tablespoons of ACV. It will enable the feed to be fermented in only 48 hours. Thereafter, a couple tablespoons of the previous batch of FF will start your next batch and it will be ready in just 24 hours.
I use filtered water because it gets rid of any residual chlorine which slows down the fermentation as yeast has to be numerous enough to overcome it, making the fermentation take longer.