Mix your sourdough starter, water and flour to form a pourable batter.
Add your baking powder and mix in, then your sauerkraut and stir to combine. I use a heaping 1/2 cup of sauerkraut but you can add more or less to taste.
Heat a griddle or non-stick pan on medium high heat and pour on the batter to make 4 large cakes.
Let the cakes cook till golden on one side and bubbly on top, about 4 minutes.
Flip and cook the other side until golden, also about 4 minutes.
After both sides are golden and they're cooked through, serve & enjoy!