Do you wash and reuse or dispose after each use? Just curious! What do you use for a bowl?

There's a dish usually eaten in December in my country called "tamal" that basically is a corn dough with meal inside it, and it's wrapped using banana leaves because it helps retaining the heat (like foil paper, but better because is from the nature) and it helps protecting the tamal, and you can use the leaves as a plate!

Is it dishwasher safe?

Wow! A fully bio-degradable single use plate. Technology has come so far in the past eight billion years, cool stuff!

That's not sustainable unless you got one of those trees behind your house and they can grow a leaf that big within a day.