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.
  
Dulce de leche is a confection prepared by slowly heating sweetened milk to create a substance that derives its taste from the Maillard reaction, changing flavour and colour.
  
Origin
Central asian countries like kazakhstan, kyrgyzstan, tajikistan, Middle East
  
Argentina