lobster bisque

[Oz]

1 cup chicken broth
2 medium slices onion
2 tablespoons butter
2 tablespoons all-purpose flour
2 cups milk
1/2 teaspoon salt
1 pound cooked and cubed lobster meat
1/2 teaspoon Worcestershire sauce
1 pinch ground cayenne pepper

In a small frying pan place 1/4 cup chicken stock and the onion. Cook
over a low heat for 5 to 7 minutes.

In a medium size pot over medium heat melt the butter. Slowly whisk in
flour. Whisk until a creamy mixture is created.

Gradually pour in stock, whisking constantly. Whisk in milk, salt, onion,
lobster meat, Worcestershire sauce and cayenne pepper. Heat until soup
is almost boiling. Do not boil the soup as the milk will curdle when boiled.

[legacy1]

How does this compare to the lobster bisque at Ruth Chris's Steakhouse?(my favorite)...