Risotto with Mint

Yield:	6 Servings
Categories:	Italian, Rice

6	c	Chicken stock
5	tb	Unsalted butter
1		Onion; finely chopped
2	c	Arborio rice
1	c	Dry white wine
1/3	c	Fresh mint leaves; loosely packed
1	c	Parmigiano; freshly grated
		Salt; to taste