Jellied pike perch

Ingredients
→ SALT
→ 50 G OF CELERY ROOT (OR ABOUT 2.5 TEASPOONS OF DRY CELERY ROOT))
→ 36 G GELATIN
→ 200 G HORSERADISH ROOT
→ 200 G GREEN ONION
→ 2 KG OF WALLEYE
→ 10 PEAS OF ALLSPICE
→ 1.5 L FISH BROTH
→ 1 CARROT
→ 1 ONION
→ 1 BAY LEAF
→ 1 PARSLEY ROOT (OR 3\4 TEASPOONS DRY PARSLEY ROOT)