I had to give it 3-4 days before I got some activity. Any flour should work as long as it is unbleached. I've had good success with just Sainsbury's strong whit

I had to give it 3-4 days before I got some activity. Any flour should work as long as it is unbleached. I've had good success with just Sainsbury's strong white bread flour. It has given me a fragrant peachy starter.