Boil the pasta until al dente and let it cool (or let it stand briefly in cold water so that it goes faster). Cook the frozen peas and corn in a little water with a little salt and sugar for a minute, then cool. You can also take corn from a can, but I would not recommend this for peas, as they have a completely different consistency and little taste from the can.
Dice the meat sausage and cheese. Cut the bell pepper into bite-sized pieces. Mix the buttermilk with a good portion of ketchup, a little Tabasco or Sambal Oelek, not too little salt, paprika and pepper and season to taste. Then pour over the salad and stir.
It`s quick and easy and thanks to the buttermilk it also holds up well in summer, i. H. you can still eat the next day. I think the salad has a lighter and fresher taste than with mayonnaise and doesn`t get too dry that easily.