Order about 25 pound of onions for every 1000 hoagies sold. Order one carton of lettuce for every 600 hoagies. One gallon mustard will cover 500 sandwiches and two team members. One gallon mayonnaise will cover 300 sandwiches and two more team members. You will also need wrapping materials.
Butcher paper is better because it tends to hide the appearance of the finished sandwich.
Each lettuce head must be washed and cored. If you hold the head core down and rap it very hard on a sturdy surface, the core will break and you can pull it out. Wash the lettuce head and tear it into small pieces. At least three people should be slicing tomatoes. Use electric knives and cutting boards for the best results.