Mix flour, beet syrup, sugar, eggs, anise, cardamom, baking powder, milk, and salt into a thick batter. Cover and refrigerate for 12 hours.
Cut the sausages and bacon into 0.5 cm thick pieces.
Heat oil in a pan over medium-high heat. Layer: place a sausage slice and bacon slice, add 1 tablespoon of batter on top and spread evenly, place another sausage slice and bacon slice on top. Fry, turning every 2 minutes, until the bacon reaches 63°C / 145°F internally and is golden. Continue with remaining batter and meat. Serve hot or cold.
Optional raisin variation: add 200 g washed raisins to the batter before refrigeration, then proceed with frying as directed.