Heat the barbecue, or a griddle pan, to very hot. Dress the peas, in their pods, with a good glug of olive oil and a large pinch of salt. Cook the pods for 2-3 minutes on each side until charred and blackened. Cook them in batches if you need to. Serve with more salt and a squeeze of lemon, eat them like edamame beans, squeezing the peas out of their pods.