Cheddar Celeriac Walnut Salad "Kleiner Frosch"

1 glass of grated celeriac - is that available anywhere? I washed it a little, because they conserve it in something sour
a small apple
2 grated carrots
walnuts, chopped
vintage cheddar, crumbs or something like that
spring onions
a little sugar
salt
lemon juice
olive oil (generous and a nice one)

I was going to put a little cabbage but didn't
Add some raisins, and it will be like a salad version of Müsli.

We have not yet solved the kleinerfrosch mystery, have we?