Slice the cabbage into fine strips, grate the carrots, cut the onions into half rings and cut the peppers into bite-sized pieces. Put everything in a bowl.
Bring the paprika powder together with the sugar, salt, oil and vinegar to a simmer on a low flame while stirring constantly. Pour over the salad and mix well. Transfer to another container and refrigerate for 4 hours.
Lasts for several weeks in preserving jars and is very tasty, especially in autumn.