The photo of your pennywort looks a lot like dollarweed
I know it as Navelwort.
The photo of your pennywort looks a lot like dollarweed
Not cooked, but as youngsters we used to often chew a leaf found in the hedgerows, it had a sharp almost bitter taste, I think it was a type of sorrel.
Probably 'bread and cheese' - per Richard Mabey's Food For Free - either wood sorrel or common sorrel