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Field guide8 Curing Problems: How to Diagnose, Fix, and Prevent Them

Cured fish recipeOrigin Recipe

Japanese Fish Sausage

A cured fish from the Salumi Atlas

Draft

This recipe is a draft, pending verification by The Curesmith. Treat the salt, cure and timing figures as provisional and confirm them against your own judgement before curing.

Introduction

Japanese fish sausage is a smooth heat-set fish-paste product formed in a narrow synthetic casing. It sits within Japan's wider culture of surimi and kneaded fish products, but its cylindrical package, resilient texture and ready-to-slice use deliberately imitate the convenience of meat sausage. The batch branch uses lean white fish, miso, potato starch and vegetable oil. It is poached and refrigerated, not commercially retorted for ambient storage.

Before you begin

Purpose and scope

The recipes published on The Curesmith are intended for educational and informational purposes only. Meat curing, fermentation and smoking involve processes that, if carried out incorrectly, can result in products that are unsafe to eat. By using any recipe on this website you acknowledge that you do so entirely at your own risk, and you agree that The Curesmith and its authors cannot be held liable for any outcome arising from its use.

Limitation of liability

The Curesmith and its authors accept no responsibility or liability for any illness, injury, loss or damage arising from the use of these recipes, including but not limited to illness caused by improperly cured, handled or cooked meat products, errors in measurement or technique, equipment failure, or deviation from the stated method or quantities.

Nitrite and cure safety

Meat curing involves the use of nitrite salts, which must be measured accurately and used strictly according to the quantities specified. Nitrite in excessive quantities is toxic. Please ensure you understand the following before proceeding:

  • Always use a calibrated digital scale accurate to at least one gram. For smaller batches, a scale accurate to 0.1g is strongly recommended.
  • Never exceed the stated cure amounts. Never substitute cure types without recalculating.
  • Store all curing salts clearly labelled, separately from regular salt, and out of reach of children.
  • Different cure products have different nitrite concentrations. Always check your manufacturer's label and adjust quantities accordingly.

Food hygiene and cross-contamination

Raw and cured meat products must be stored, handled and prepared in a clean environment using food-safe equipment. Hands, surfaces, tools and containers must be thoroughly cleaned and where appropriate sanitised before use. Cross-contamination between raw meat and ready-to-eat products must be avoided at all times.

Temperature control

Temperature control is critical throughout all curing and smoking processes. Inadequate temperature management can allow the growth of dangerous pathogens including Clostridium botulinum, Listeria monocytogenes, Salmonella and E. coli. A reliable refrigerator thermometer and a calibrated probe thermometer are essential pieces of equipment for anyone producing cured or smoked meat at home.

Uncooked cured products

Whole muscle products that are eaten without cooking, such as air-dried bresaola, coppa or prosciutto, must reach their target weight loss before consumption. Products that have not been cured and dried to the correct specification may not be safe to eat uncooked. Pancetta and guanciale cured to less than 38% weight loss must not be consumed uncooked.

Bacon and other uncooked cured products

Bacon and other uncooked cured products must be cooked thoroughly before eating. Cold smoking adds flavour and colour but does not cook the product. A cold-smoked bacon or sausage remains a raw product and must reach a safe internal temperature before it is safe to consume. For pork and beef this is 72°C / 162°F. For poultry this is 74°C / 165°F.

When in doubt, seek professional guidance

If you are unsure about any aspect of the curing, smoking or fermentation process, we strongly encourage you to seek formal training or guidance from a qualified food safety professional before proceeding. The information on this website is not a substitute for proper food safety education and training.

Commercial production

These recipes are produced for home and small-scale producers. They are not intended for commercial food production. Commercial meat processing is subject to regulatory requirements that vary by country and jurisdiction. If you intend to produce cured or smoked products for sale, you must ensure full compliance with all applicable food safety regulations in your region.

The recipe

StyleSalt cure (EQ)
Cure time7 days
Before curingFreeze at -20 C (-4 F) for at least 24 hours before curing (parasite control)

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Ingredients

gAdjust to
scale the recipe
Piece thickness: enter the thickness at the thickest point; it sets the cure time.
mm thickness
Potato starch Potato starch
Potato starch Potato starchReference1000 g
Cure
Sea salt2.5%25 g
Crushed ice200%2000 g
White pepper5%50 g
Ground coriander2.5%25 g
Fresh ginger, finely grated5%50 g
Garlic, finely minced8.8%90 g
White miso paste75%750 g
Neutral vegetable oil50%500 g

Curing timeline

Cure time7 days
Pre-cure freezeFreeze at -20 C (-4 F) for at least 24 hours before curing (parasite control)
Cure temperatureRefrigerated, 2-4 C (36 to 39 F)
Air-dryRefrigerate at 0–4°C; use within 4 days or freeze promptly
Ready whenFirm and set through

Method

1
Chilling / rest. Remove every bone and skin fragment, confirm species and keep fish, water and equipment at 0–2°C. (Endpoint: Use very fresh or properly thawed fish and prevent cross-contamination.)
2
Comminution. Fine-process fish with salt until the myofibrillar proteins produce a sticky paste. (Endpoint: Keep the paste below 10°C.)
3
Drying / maturing. Add crushed ice, miso, starch, oil and aromatics in stages and process until smooth. (Endpoint: Declare fish and soy allergens.)
4
Stuffing. Fill the synthetic casing evenly and close securely without trapped air. (Endpoint: Use only heat-safe casing.)
5
Cooking. Poach at 78–80°C until the cold point reaches 68°C. (Endpoint: Time alone is not the release control.)
6
Chilling / rest. Shower immediately and complete controlled chilling before packaging. (Endpoint: 57°C to 21°C within 2 hours and to 5°C or below within 6 hours total)
Key tipsThis is the house equilibrium version at no more than 2.5% salt. Fish safety differs from meat: follow recognised Fish and Fishery Products guidance for histamine and Listeria control.
ImportantThis is eaten uncooked. Freeze for parasite control before curing, keep it cold throughout, and follow fish-specific safety guidance.

Recipe by The Curesmith — thecuresmith.com