Preheat the oven to 400 degrees. Prepare the dough: In a large mixing bowl, combine the flour and yogurt, stirring until they are well combined, using a fork, if necessary. If the mixture is too sticky, add a Tablespoon of additional flour and continue to mix. Repeat as necessary until the mixture becomes a workable ball of dough. Remove the dough from the bowl and knead on a lightly floured surface, until the dough is smooth.
Divide the dough into 4-6 equal portions. Roll each piece into a long rope, making each piece approximately 8-10 inches in length. Place the rope into a “U” shape, and then twist the ends before bringing them back down over the top of the pretzel.