- It is a sign of respect to give and receive with two hands. It has practical elements in that two hands are surer then one, lessoning the chance of dropping or spilling the item being given, which especially in old times was usually precious or rare, with food and tools taking more time and energy to produce then what we are used to in this convenience/ manufacturing/take-things-for-granted culture of ours. Children will still receive with two hands from their parents or any other person who gives them something or will use both hands when tasked with giving something to someone. - the act of using two hands by the receiver would have symbolized to the giver (and others) firstly the appreciation of the gift, and secondly a sign that the receiver was mindful enough to receive the gift and take responsibility for it. - hand clapping (a quick double clap usually) is also used often to indicate agreement or appreciation - A modern adaptation includes the other hand touching the elbow or upper arm of the one giving or receiving (often used in greetings too). Practically this allows more reach and less awkward formality, whilst still communicating respect through the token gesture reminiscent of its predecessor.
