A Home Cook’s Guide to Buying Asian Seafood in the UK

As a Joybuy Product Recommendation Officer, I often speak with home cooks across the UK who are passionate about recreating authentic Asian dishes. A common frustration they share is the difficulty in sourcing the right seafood. While local supermarkets are improving, finding specific ingredients like whole yellow croaker or pre-cut ribbonfish remains a challenge.

Shopping online opens up a world of choice, but it also presents its own set of challenges. Navigating the options can be confusing, and it is easy to make a purchase that does not meet your expectations. Before you fill your basket, let’s look at a few common pitfalls to avoid.

• The Net Weight Illusion: Many frozen fish products are sold by their gross weight, which includes a protective layer of ice known as a "glaze." A high glaze percentage (often 20% or more) means you are paying for a significant amount of water that will disappear upon thawing, leaving you with less fish than you anticipated.
• The "Mystery Fish" Problem: Vague labels like "white fish chunks" can be a gamble. The success of many Asian recipes depends on the specific texture and flavour profile of the fish, whether it's the firm flesh of a pangasius fillet for a curry or the delicate texture of sea bass for steaming. Using the wrong type can lead to a disappointing meal.
• The Freezer Burn Flavour Drain: Poorly packaged or stored frozen seafood is susceptible to freezer burn. This occurs when moisture escapes the fish and forms ice crystals, resulting in a dry, tough and flavourless product once cooked.

Key Factors to Check Before You Buy

To ensure you get quality and value, focus on a few key details on the product page. This will help you select the right Asian seafood for your culinary needs.

1. Net Drained Weight vs. Gross Weight

Always look for the net weight or drained weight of the product. Reputable suppliers will clearly state both the gross weight and the net weight of the fish itself. For example, a product might be listed as "1kg (Net 800g)," indicating a 20% protective ice glaze. This transparency allows you to accurately calculate the price per gram of the actual seafood, ensuring you get what you pay for. This is particularly important for bulk purchases of frozen Asian fish.

2. Fish Species, Cut and Origin

The type of fish is crucial. A Vietnamese catfish (Pangasius) offers a mild flavour and firm texture that holds up well in stir-fries and soups, making it a versatile choice. In contrast, a yellow croaker has a more delicate, slightly sweet flesh that is traditionally steamed or pan-fried. For specific dishes like Korean Galchi-jorim, you need ribbonfish (belt fish), which has a unique texture and flavour.

Pay attention to the cut as well. Boneless and skinless pangasius fillets save preparation time, while bone-in steaks or whole fish can add more flavour to broths and stews. Knowing the species and cut ensures your final dish has the authentic taste and texture you are aiming for.

3. Preservation Method: Frozen, Canned or Dried

The format you choose depends on your recipe and storage preferences.

• Frozen: Individually Quick Frozen (IQF) is a common method for preserving the freshness, texture and nutritional value of fish. It is an excellent choice for most cooking applications.
• Canned: Canned products like canned fried dace with black beans offer incredible convenience and a long shelf life. They are ready-to-eat and provide a concentrated burst of savoury flavour, perfect for a quick meal with rice or congee.
• Dried: Ingredients like dried anchovies for stock are a powerhouse of umami. They are essential for creating the foundational broths used in many Korean and Southeast Asian soups and stews.

Our Top Product Recommendations

To help you navigate the options, here are a few selections matched to different cooking styles and needs.

MATCH FOR: The Weeknight Meal Planner

Asian Star White Pangasius Fillet - 1kg （Net 800g）

Why This Fits Their Persona: This is for the busy home cook who needs a reliable, versatile protein for quick and healthy meals. The boneless, skinless fillets are ready to be used in curries, stir-fries, or baked dishes without any fuss.

How It Avoids the Trap

The packaging clearly states "1kg (Net 800g)," providing transparency about the 20% ice glaze. You know exactly how much fish you are getting, avoiding the net weight illusion.

Key Advantage & Pros

The fillets are skinless, boneless and have a firm texture that does not break apart easily during cooking, making them ideal for a wide range of dishes.

MATCH FOR: The Authentic Recipe Enthusiast

JK Frozen Roasted Eel (Unagi) 7oz (190 g-200 g)*2

Why This Fits Their Persona: For the cook dedicated to making a specific dish like Japanese Unagi Don. They need a specific ingredient that delivers an authentic flavour profile without having to prepare it from scratch.

How It Avoids the Trap

This product completely sidesteps the "mystery fish" problem. It is a very specific item—grilled and sauced eel—so you know exactly what you are getting for your recipe.

Key Advantage & Pros

It offers convenience without compromising on flavour. Being pre-cooked and seasoned, it allows you to create a restaurant-quality dish at home in minutes.

MATCH FOR: The Pantry Stocker

Eagle Coin Fried Dace with Salted Black Beans 184 g

Why This Fits Their Persona: This is for someone who values having flavourful, long-lasting staples on hand. A can of fried dace can instantly elevate a simple bowl of rice or congee into a satisfying meal.

How It Avoids the Trap

As a canned product, it avoids all issues related to freezing, glazing and freezer burn. The contents are preserved in oil, ensuring consistent quality and intense flavour every time.

Key Advantage & Pros

It is ready-to-eat and packed with a rich, savoury flavour from the fermented black beans. It is a classic Cantonese comfort food that requires zero preparation.

Frequently Asked Questions

How do I make a good Korean stock with dried anchovies?

Making a flavourful myeolchi yuksu (anchovy stock) is simple. For a basic stock, add a handful of large, headless dried anchovies for stock to a pot with about 1.5 litres of cold water. You can also add a piece of dried kelp (kombu) and a few dried shiitake mushrooms for more depth. Bring to a boil, then reduce the heat and simmer for 15-20 minutes. Skim off any foam that rises to the surface. Strain the stock, discarding the solids, and it is ready to use as a base for soups like doenjang-jjigae (soybean paste stew) or noodle dishes.

What is the difference between Pangasius and Vietnamese Catfish?

There is no difference; they are two names for the same fish. Pangasius is the scientific name for a genus of shark catfish native to Southeast Asia. The species most commonly farmed for food is Pangasius bocourti or Pangasius hypophthalmus, which is marketed globally as Vietnamese catfish, Basa, or Swai. It is popular for its mild taste, white flesh and affordable price.

Is it safe to buy frozen Asian fish online in the UK?

Yes, it is safe, provided you buy from a reputable online retailer that follows UK food safety standards. Look for suppliers who describe their cold chain logistics. This typically involves storing products in temperature-regulated facilities and shipping them in insulated packaging with dry ice or frozen gel packs. This ensures the product remains frozen from the warehouse to your doorstep, maintaining its quality and safety. Always check the product's condition upon arrival and transfer it to your freezer immediately.