Name: How to can any one tell me what plant,seed,fruit this is
Ingredients: One seed found on the side of the road

STEPS
INGREDIENTS
Ok so I am in France for a few weeks and came across these can anyone till me what thy are ?
Very spiky
Cut in 1/2
Looks like a nut
Skin peels off
Very nutty looking but still all green
 One seed found on the side of the road

How to can any one tell me what plant,seed,fruit this is

Can Any One Tell Me What Plant,Seed,Fruit This Is