It's the kitchen's prep sheet: for the selected date range, it lists every meal ordered through Catering + Events, broken down by portion size, showing the total ingredient quantities needed to cook that many portions — including quantity swaps from meal modifiers (e.g. a customer swapped out an ingredient) and, if Custom Meals is on, a separate custom-meal ingredients breakdown grouped by build-your-own component (protein, base, sauce, etc., as you've named them).