How To Eat Food Served Communally In A Different Culture

How do I eat food served communally?

You may eat communally where you have a big platter and you reach out either with your hands or with bread, with injera, the Ethiopean bread. And reach it, right hand only and take it to your mouth. Or you may be using chopsticks and taking things from the center bowl, the center platter, but when you reach for the food, you reverse the chopsticks and it's not the part that went in your mouth, it's the upper part you use for removing the food from the central plate.