Heat oil in a large skillet or wok over moderately high heat until hot but not smoking, then saute shallots, ginger, and garlic, stirring, 1 minute.
Add peas and saute, stirring, 2 minutes. Add water and simmer, stirring occasionally, until peas are crisp-tender, about 2 minutes. Season with salt and pepper and sprinkle chopped fresh mint over top.