Broad beans, fava beans. そらまめ、蚕豆、空豆。Vicia faba.
Beans with large pods that have been cultivated in Japan since the 8th c. They are one of the oldest staple dishes in the world and were part of the Mediterranean diet 6,000 years ago. Harvested in May-June and eaten young.
Used as a vegetable (an ingredient in nimono), a garnish or a dish in its own right. Boiled in salted water and served plain as on the photo here they make a good accompaniment to beer in summer. They can also be deep-fried as tempura.
[Soramame. Photo Ad Blankestijn]