Bring a large pot of water to a boil.
Meanwhile, shell peas (you should have about 4 cups).
Cook peas in boiling water until tender, about 2 minutes.
Drain well and transfer to a medium bowl.
While peas are cooking, trim and discard the root ends of green onions.
Thinly slice the green onion and set aside.
Finely chop mint and set aside.
Add butter to hot peas and stir until butter is melted and peas are coated.
Add green onion and mint and toss to combine.
Sprinkle with salt and serve immediately.