I've recently been lucky enough to gain long term camping and bushcraft permission on some secluded woodland. For a water source there is a lake and it's from there that I've been able to forage bullrush shoots for the first time. I found them to be very good eating. Easy to collect, they just needed a slight pull to to come away from the main rhizome. Extremely tender even when raw, they had a very mild flavour with no discernable after taste. I tried them raw, cooked whole over coals and finally, sliced into some nettle soup and all were fine. The main plus point over all is that aside from the actual collection there was zero processing or preparation involved before I could eat them. They came out of the water instantly edible. As the months progress I'll re-visit to try other ways I've read about of utilising the bullrush during its whole life cycle.