Classification is calculated according to the number of people, and the number of categories is calculated separately. Each category can be divided into sub-categories * number of people. 1, take melon seeds as an example: 2 kg of melon seeds per table, 1-2 Liang per person, which can be matched with peanuts or other nuts. Remember that the quantity should be small. After all, it is food, not retail. Sugar and tobacco have the same algorithm. 2. Consider the local customs. 3, can be prepared to increase the amount, the overall don't waste.