TM 10-412 is 1600 recipes 'Food for 100', with an adjustment table to convert measures to 10, 25, 75, 150, 200 and 300 portions
Try this recipe for ChiliMac;
12 pounds elbow macaroni, cooked in two batches
four #10 cans of Chili no beans - two for each batch
one #10 can of ketchup (or two 64 oz...