What is
Strained yogurt, Greek yogurt, yogurt cheese, labneh, is yogurt which has been strained to remove its whey, resulting in a relatively thick consistency, while preserving yogurt's distinctive, sour taste.
  
Whey is a natural substance, the liquid part of fresh milk that is left over from the making of cheese.
  
Origin
Central asian countries like kazakhstan, kyrgyzstan, tajikistan, Middle East
  
Europe