Koha is an example of the reciprocity which is a common feature of much Māori tradition and often involves the giving of gifts by visitors to a host. Usually this takes the form of a basket or platter of food which is shared at a gathering. On a practical level, this koha is a contribution towards the catering for the event. On a deeper, and somewhat more personal level, koha can also symbolise an expression of aroha (deep gratitude, love and affection).