Planning Food for 100 Guests
Running a 100-person event
One hundred guests is an event with a timeline, not a big dinner. Work backwards from serving time on paper: when each dish starts cooking, when it moves to holding, when tables are set, and who does each step. Two serving lines are mandatory, a third helps; a single line for 100 people takes over half an hour to feed everyone.
Rented or borrowed equipment usually enters at this size: chafing dishes, beverage dispensers, folding tables, and trash cans in multiples you will not own. Order shelf-stable backup for the two most popular items (an extra case of buns, chips, and soda), because at 100 guests a 10% miss is 10 hungry people, and returns cost less than running short.
For the general rules behind these numbers (the 1-pound-per-adult baseline, how to mix mains and sides, and when to add a buffer), see Party Food Planning 101 or the serving size chart.