It is not a traditional German recipe in the sense of "having been in the family for generations" (You can't grow pineapples in Germany usually

) , but Rohkostsalat in one form or another has become a regular food in many German families who try to eat more healthy. I myself have been aware of a trend for lighter, healthier food in German cookbooks and magazines since the early 80's, though it actually goes back much further I believe. Rohkostsalat is one of the oldest forms of "health food" you encouter in those books and magazines, so you could say it is traditional.
Rohkost means "uncooked vegetables and fruits". Rohkostsalate are salads not made from typical salad ingredients like tomatoes, cucumber, lettuce. The idea of Rohkost is not to loose nutrients through cooking and adding more fiber. All Rohkostsalate are usually finely grated or cut to make them easier to digest. Also a dairy product is frequently used in the dressing to add proteins. Together with added nuts or grains (sprouts) which are often added dairy products contain all amino acids your body requires. This combination is therefore considered "vollwertig" (having full value ). "Vollwertkost" (eating foods that have full value for the nurishment of your body) is an old health food trend in Germany.
A classical Rohkostsalat I frequently do is
Möhrenrohkost (Carrot salad)
1 cup finely grated carrots
3/4 cup grated tart apples
3 TB roughly chopped nuts
1/2 cup natural yoghurt
1/2 T mild honey (or sugar)
1-2 TB lemon juice (depending on how sweet you like it)
1 pinch salt
Mix all ingredients except nuts together, sprinkle with nuts.
Serve immediately with dark bread and butter as a lunch or light dinner (add a tomato salad then). Will turn brown if it stands too long.