First I've decided to explore my possibilities in getting straws in London area. All types of straws are suitable, as long as they are hollow. But the most commonly used are reeds so I have decided to find them. Making puzuri was a winter activity so the straws were collected in late autumn when they had dried before the start of the snow period. In my case I will see if there are any old reeds left from the last year.
I'm going to visit Twickenham - Radnor Gardens where I can access River Thames and my other destination is Isleworth - Syon Park where there is a pond. If my searches won't succeed I will have to consider some further destinations.