Convention Macaroni and Cheese

For 500:

Fill a 30 gallon steamer 2/3 with water *
Heat to boiling and add:45 lbs elbow macaroni *
Boil for 8 minutes. *

In a separate 30 gallon steamer, melt:
11 lbs butter/margarine *
Alternately stir into the butter:
11 gallons of milk *
22 cups flour *
Stir till smooth and thick. *

Add:
3 TBSP dry mustard *
6 TBSP paprika *
1/2 cup pepper *
When milk is scalding, slowly add, stirring constantly:
25 lbs grated cheddar/American cheese *

Stir till totally melted and smooth. *
Add: 60 lbs diced wieners *

Steam at low heat for 1 hour, stirring often.