kalbsbries imperial (sweetbreads with paprika sauce)

3 pairs sweetbreads
1 ,cold water
1 ,boiling water
1 t salt
2 t vinegar
2 sl tongue,thickly sliced
5 t butter
1 t goose liver pate
3 c cooked rice,mixed with-3 t butter
2 t parsley,chopped
1 salt,to taste
1 1/2 c paprika sauce
3 t parmesan cheese
1 green peas,for garnish
1 parsley sprigs,for garnish
paprika sauce ==================
1 onion,very finely chopped
3 t butter
2 t flour,sifted with-
1 t paprika
1 1/2 c beef stock
1/2 c heavy cream