Peel the potatoes and grate them finely using a food processor with the finest grating insert (or use a box grater).
Drain the grated potatoes in a colander or squeeze them in a clean kitchen towel to remove excess moisture.
Transfer the drained potatoes to a mixing bowl and combine with the eggs and salt.
Warm the milk in a saucepan over medium heat until hot and steaming, about 1-2 minutes.
In a separate bowl, mix the flour with the dry yeast.
Add the flour-yeast mixture to the potato mixture in 2 portions, alternating each portion with some of the warm milk, mixing with a dough hook until a smooth dough forms.
Knead the dough for 5 minutes.
Cover and let rise in a warm place for 60 minutes until visibly enlarged.
Knead the raisins into the dough.
Pour into a greased loaf pan, cover, and let rise in a warm place for 30 minutes.
Preheat oven to 180 °C / 356 °F with top and bottom heat (or 160 °C / 320 °F with convection).
Place the loaf pan on a wire rack on the lower oven shelf and bake for 60 minutes until golden brown.
Remove from the loaf pan and let cool on a wire rack.
Cut the cooled Pickert into slices.
Serve cold, or heat fat in a large pan over medium-high heat and fry the slices until golden brown on both sides, about 3 minutes per side.