Answer:
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.
A leathery snake, with a stinging bite. I'll stay coiled up, unless I must fight.
You'll see savory dishes in Hong Kong sizzling in these.
Who eats a lot of iron without getting sick?
How can you burn an apple, blueberry, rose and pumpkin without leaving any ashes but retaining the smell of it?
What did the piece of wood say when he saw the screwdriver and screws approaching?