|Vinegar||17 1⁄2 Tablespoon (About 1 Cup Plus 1.5 Tablespoon)|
|Mackerels||4 (Use Whole Ones)|
|Dill||1 Bunch (100 gm), chopped|
Peel onions; slice into rings.
Boil vinegar, salt, peppercorns, and bay leaves in pot; set aside to cool.
Wash, clean, fillet, and halve mackerels; cut each piece in half again.
Put into glass pot; cover with onion rings.
Spread marinade on top; let stand at least 24 hours.