| 12 | oz | Spaghetti; cooked and still warm | 
| 1 | tb | Unsalted butter | 
| 2 | tb | Bacon drippings | 
| 1 | lg | Onion; chopped | 
| 3 |  | Celery ribs; chopped | 
| 1 |  | Green bell pepper; chopped | 
| 1 | c | Mushrooms (about 10-12 med.); minced | 
| 3 |  | Cloves garlic; minced | 
| 1 | ts | Worcestershire sauce | 
| 2 | ts | Chili powder | 
| 1 | tb | All-purpose flour | 
| 1 1/2 | c | Beer or chicken stock; unsalted | 
| 3 |  | Ripe tomatoes; preferably Roma or another Italian Plum variety | 
| 1/4 | c | Chili sauce | 
| 3/4 | c | Half and half | 
| 2 | tb | Parsley; minced | 
| 2 | c | Cooked chicken; diced or shredded | 
| 1/2 | c | Pimento-stuffed green olives; sliced | 
| 2 | c | Medium Cheddar cheese; grated (about 8 oz) |