Can I make all the recipes in a cookbook public or private at once?

Yes. Open the cookbook and, next to Bulk Recipe Tag/Move/Delete, tap Make all recipes Public or Make all recipes Private. Before anything changes we show you exactly how many recipes will switch, so you can confirm or cancel. - Secret recipes always stay Secret, whichever button you press. - Only the recipes change — the cookbook's own privacy setting stays as it is. Change that from Edit cookbook if you want to. - Copies of other cooks' recipes are left private; make those public one at a time once you've edited them and added your own photo. - You can still make any single recipe Public, Private or Secret from the recipe itself. This is handy after a big import: everything you import (and the new cookbook made for it) arrives private, so you can review it first and then publish the lot in one tap.