El Charro Cafe Green Enchilada Sauce

Here is a recipe for green enchilada sauce. Good with pork or chicken.

Makes about 3 cups

2 tablespoons vegetable oil
1/2 white onion, chopped
2 tablespoons flour
2 cups roasted, peeled, seeded
    and chopped Anaheim chiles
3 to 4 cloves garlic, minced
2 cups chicken stock
3/4 teaspoon salt/or to taste

In a medium skillet, heat oil and saut