Preheat the oven to 180 degrees Celsius/ 360 degrees Fahrenheit.
While you wrap the pigs bring 1,5 liter/ 50 fl.oz/ 6.3 cups water to a boil. Dissolve 3 tablespoons bicarbonate of soda in the water and let boil for about 3 minutes.
After the dough has doubled in size, knead it shortly on a floured surface. Roll the dough to a rectangle and cut it. Once vertically in half and then horizontally to obtain 12 smaller rectangles. Cut the edges of the dough all around so that the rectangles are regular.
Cut each sausage in three pieces that would fit into the dough rectangles. If making the pigs with weisswurst, start by removing the peel of the weisswurst. Half the weisswurst horizontally and cut the halves in two vertically as well. In the end, you will have 4 pieces out of one weisswurst.
Place one piece of sausage in the middle of each rectangle and roll the dough around it.
Use the dough scraps to roll and cut a few rectangles more, I had 3 or 4 smaller extras. Wrap a sausage piece in these extra pretzel dough rectangles as well.
Carefully place some of the pretzel pigs into the boiling water and let simmer for about 30 seconds. Remove from the water with a slotted spoon, shake shortly to remove the excess water, and place the pigs on a baking tray lined with baking paper.
Repeat with a second batch.
Brush the pretzel bites with beaten egg and sprinkle with coarse sea salt. Bake for 15 to 20 minutes or until golden brown and cooked through.
Serve with sweet coarse mustard, the typical accompaniment for weisswurst or curry sauce/ curry ketchup.