You’ve probably tried rhubarb pie at least once in your life and it’s delicious right?
That’s because while cooking with rhubarb you should only use the stem and never, ever consume the green leaves.
Rhubarb leaves are crammed with oxalates, which can be poisonous if you decide to consume them in significant amounts. The ingestion of the leaves can cause seizures and severe respiratory problems.
You can safely enjoy rhubarb pies as long as you stay away from those pesky leaves!