Home-Canned River Fish in the Oven

Name: Home-Canned River Fish in the Oven
Prep time: 1 h
Cook time: 5 h
Total time: 6 h
Yield: 0.5 l (one jar)
Ingredients: River fish (crucian carp, roach, bream) — 500 g Coarse salt — 1/2 tbsp (at a rate of 1 level tbsp per 1 kg of fish) Black peppercorns — 5 Allspice berries — 2 Bay leaf — 1 Refined vegetable oil — 3 tbsp

Published: 04.09.2026

Updated: 04.09.2026

🤤 Здорові рецепти щодня

Cooking time 6 hours Portions 0.5 l (one jar)

An autumn session leaves the angler with a simple problem: a bucket of crucian carp, roach and silver bream — small, bony, not worth frying one by one, and the freezer is already full. Canning is the answer to exactly that problem. Five hours of slow heat soften the bones so thoroughly that they are eaten along with the flesh, and what would have been a fiddly plateful of bones in the pan turns into a ready appetiser.

The oven is the simplest of the three home methods. An autoclave sterilises under pressure, but not everyone owns one. A pot of water means five hours of watching the level and topping it up with boiling water. In the oven the jars simply stand on the rack at a set temperature, with a tray of water underneath so the heat does not hit the glass from below.

Any river fish with fine bones will do: crucian carp, roach, bream, silver bream, rudd, small common carp. Keep pike and pikeperch out of the jars — they are lean, and long stewing leaves them dry and stringy; they are better baked or fried.

If the fish is large and its bones are large with it, canning is not needed — then it is Whole Baked Bream in the Oven. From small fish, besides canning, Whole Spiced Salt Herring works well.

Caloric content: 220kcal

Ingredients

River fish (crucian carp, roach, bream) — 500 g
Coarse salt — 1/2 tbsp (at a rate of 1 level tbsp per 1 kg of fish)
Black peppercorns — 5
Allspice berries — 2
Bay leaf — 1
Refined vegetable oil — 3 tbsp

Clean and weigh the fish

Scale the fish, cut off the heads with the fins, remove the guts and be sure to strip the black film from inside the belly — that is what makes the fish bitter. Rinse in cold water and cut into 3–4 cm pieces. Weigh the cut fish: the salt is measured against this weight, not the whole-fish weight.

Salt it

Transfer the fish to a deep bowl and sprinkle with salt at a rate of one level tablespoon per kilogram. Mix with your hands so the salt reaches every piece and leave for 15 minutes. No longer: the fish still has five hours in the oven ahead of it and will take up the rest of the salt there.

Fill the jars

Put 5 black peppercorns, 2 allspice berries and a bay leaf in the bottom of each dry, clean half-litre jar. Pack the fish pieces on top tightly, with no gaps, right up to the rim: it will settle by about a quarter as it cooks.

Add the oil and set the jars in the oven

Pour 2–3 tablespoons of odourless refined oil into each jar. Cover the jars with seaming lids — rubber seals removed — or with pieces of foil. Stand them on the rack of an oven preheated to 150 °C, with a tray of water on the shelf below so the heat does not hit the glass directly.

Five hours of slow heat

Hold 150 °C for the first hour — the oil and juices in the jars come to a boil. Then drop to 100 °C and leave for another 4 hours. This is the stretch that softens the small bones; it cannot be shortened, and under-cooked fish stays bony.

Seal them hot

Take the jars out one at a time and seal them immediately, while hot. If a jar has settled and is no longer full, top it up with fish from another one first, then seal. Turn the finished jars upside down on their lids and leave them to cool.

Check the result and put it away

The finished fish is soft, the bones cooked soft, the oil thick and aromatic. Move the cooled jars straight to the refrigerator — home-canned fish in oil does not keep at room temperature. Shelf life: three to four months.

Notes

Weigh the fish, do not guess the salt. One level tablespoon per kilogram of cut fish is roughly 25–30 g. Less and the jars will not keep; more and the fish comes out inedibly salty, with no way back.
Fresh fish only. Canning fixes nothing: what began to spoil before the jar will go on spoiling inside it. A catch that spent half a day in the warm does not go into cans.
Strip out the black film inside the belly completely. It is the main source of bitterness, and five hours of heat do not remove it — they set it.
Fill the jars to the very top. The fish settles by about a quarter during cooking; one jar is handy for topping up the rest before sealing.
Foil works instead of lids. If you use seaming lids in the oven, take the rubber seals out first — they melt.

Safety: why these jars live in the fridge and nowhere else

Fish under oil behind an airtight lid is an oxygen-free, low-acid, fatty environment — precisely what botulinum spores need. An oven at 100 °C does not destroy those spores; it only keeps them from growing while the jar stays cold. Commercial canneries sterilise at 120 °C under pressure; without pressure the contents of a jar never go above 100 °C, whatever the oven dial says.

Hence three rules that are not up for discussion: keep the jars in the refrigerator only, eat them within three to four months, and throw out — without tasting — any jar with a bulging lid, cloudy oil or an off smell. One spoiled jar is not worth the risk.

Recipe and photos — kolizhanka.net.ua