|Onion||1 Large, thinly sliced|
|White wine vinegar||3 Cup (48 tbs)|
|Sugar||1⁄4 Cup (4 tbs)|
|Mixed spice||2 Tablespoon|
Wash herring under running water to remove salt.
Trim off heads and tails; soak in cold water overnight.
Next day, drain and fillet fish; cut into 2-inch pieces.
Pack layers of fish pieces and onion slices into wide-mouth jars.
Combine vinegar, sugar, and spices; simmer 5 minutes.
Cool and pour over herring to cover.