In a large mixing bowl, whisk together the all-purpose flour and salt. Add the eggs and water gradually, whisking until the mixture is smooth and lump-free.
Heat a non-stick skillet over medium heat and brush it lightly with clarified butter. Pour about 1/4 cup of the batter into the skillet, swirling it around to coat the bottom evenly. Cook for about 1-2 minutes until the edges start to lift and the center is set. Carefully flip the crepe and cook for an additional minute. Transfer to a plate and repeat with the remaining batter.
In a separate bowl, combine the farmer's cheese, egg yolks, sugar, and vanilla. Mix thoroughly until you have a smooth and creamy filling.
Take one crepe and place a generous spoonful of the cheese filling in the center. Fold the sides in and then roll it up tightly, similar to a burrito. Repeat this process with the remaining crepes and filling.
In the same skillet, melt a bit more clarified butter over medium heat. Place the filled blintzes seam-side down in the skillet. Cook for 2-3 minutes on each side until they are golden brown and crispy.
Transfer the cooked blintzes to a serving platter and serve warm with your choice of toppings, such as sour cream, applesauce, or fresh berries.