Prepare a piece of cheese cloth.
Scoop yogurt out of container into a bowl and add salt stirring well to combine.
Put mixture into cheese cloth. Bring sides up and tie.
Put yogurt in a strainer over a bowl ensuring bottom does not touch the liquid (whey) coming otu of the yogurt.
Let sit on counter for at least 24 hours. You can cover lightly with plastic wrap.
Remove from cheesecloth and put into serving dish smoothing out leaving a few craters for the olive oil to collect in.
Pour on olive oil and sprinkle with pistachios and za'atar.
Serve with crackers or pita bread.