For regular Potato Salad, I boil my potatoes peel and dice, Add chopped boiled eggs, finely chopped sour pickles, finely chopped onions mayo and mustard 50/50 approx. Salt and Pepper to taste. I then take an old fashioned hand held masher and mash everything to a smaller consistency but not too mushy. Taste and add whatever for taste, More mayo, more mustard, more salt and pepper, maybe a little sour pickle juice if too dry.
If I'm doing German, I do everything the same up to doing the potatoes. I fry and crumble up 3-4 strips of bacon along with the eggs, onions and sour pickles. I then put 1 part water to 2 parts apple cider vinegar in a small sauce pan, along with salt, pepper and a teaspoon of bacon grease. bring to a boiled and remove from heat. Pour hot mixture over potatoes and other ingredients. stir and serve hot, or place in frig to cool and serve. No mayo or mustard go into German,