Hard Rock Cafe Hickory Smoked Chicken and Spinach Dip

Yield: 4 quarts

6 ounces (3/4 cup) butter
1/2 cup olive oil
12 ounces (3/4 pound) finely chopped yellow onion
2 1/2 ounces (1/4 cup plus 1 tablespoon) chopped garlic in oil
6 ounces flour
1 quart chicken consomm