Finely grind the wheat with caraway seeds and mix with the other flour and salt in a bowl.
To press a hollow in the middle. Crumble the yeast into the hollow and pour 1/8 liter of water into it. Mix a thick porridge with part of the flour. Let rise for 45 minutes.
Add the rest of the water, knead for a long time and thoroughly until a smooth dough is formed that no longer sticks.
Divide into 12 equal pieces. Knead each piece briefly again and shape into a small, elongated loaf.
Bring 1 liter of water with baking soda to a boil in a saucepan. Depending on the size of the pot, cook two to four pieces of dough together for ½ minute. Remove with a slotted spoon and place on a greased baking sheet. Sprinkle to taste.
Bake in the preheated oven on the second rack from the bottom at 200 ° C (fan oven 180 ° C) for approx. 20 minutes until they are light brown.