Drain fish well. Peel and chop the onions. Knead well with eggs and 75 g crumbs. Season. Form approx. 30 meatballs. Turn the crumbs in the rest. Fry in hot oil at medium heat for 5-6 minutes.
Let it cool down if necessary.
Mix the mayonnaise and sauce together for the dip. Wash the tomatoes. Wash parsley, pluck. Garnish meatballs with silver onions, tomatoes, cucumber and parsley.