On Purim one of the special mitzvot we perform is giving food gifts to friends. The reason we perform this mitzvah is to bring joy to others and to generally increase happiness among Jewish people on Purim. What better way to make friends happy than to give them food packages!
To fulfill this mitzvah one needs to give at least two types of foods to at least one person, but you may of course give as many portions to as many people as you wish.
Two different types of food or two different types of drink, or a food and a drink should be given.