Pork blood pudding (also known as blood curd or “tiết lợn” in Vietnamese cuisine) is a popular ingredient in many traditional dishes. Rich in iron and often praised for its unique texture, it's commonly served in soups or eaten with herbs and rice noodles. However, not all blood pudding sold at markets is genuine — and consuming fake or contaminated versions can pose serious health risks.

So how can you tell if the pork blood pudding you're buying is real? According to experienced shoppers and food experts, all it takes is a quick glance at three key details.

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1. Color and Surface Texture

What to look for:
Real pork blood pudding has a deep reddish-brown color, with a smooth, slightly shiny surface once it sets. It should not look too bright, too dark, or oddly uniform.

Warning sign:
If the blood pudding looks grayish, too dark (almost black), or has unusual spots or patches, it could be fake or mixed with unsafe additives like dyes or starch. A dull, chalky appearance may also indicate that it's old or poorly stored.

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2. Smell

What to look for:
Fresh, real pork blood pudding has a mild, slightly iron-like smell, similar to fresh liver. It should not be overly pungent or off-putting.

Warning sign:
If it smells sour, metallic, or chemical-like, steer clear. Some fake versions are made with synthetic ingredients or pig blood mixed with unknown substances to create a similar texture.

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3. Texture When Pressed

What to look for:
Gently press the pudding with your finger or a chopstick. Real pork blood pudding is slightly springy, soft, and should bounce back a little when pressed. It should not break apart too easily.

Warning sign:
If it's too firm, rubbery, or crumbles like tofu, it may have been mixed with starch or gelatin. These fakes often lack the subtle elasticity of genuine blood pudding.

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Bonus Tip: Ask the Seller

Smart buyers also pay attention to the source. Ask the vendor how the pudding was made, when it was prepared, and whether it contains any additives. Reputable sellers won’t hesitate to give clear answers — vague or evasive replies could be a red flag.

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Why It Matters

Fake or low-quality pork blood pudding can contain harmful chemicals, preservatives, or contaminated ingredients. Consuming such products may increase the risk of food poisoning, digestive issues, or worse. That's why it's crucial to know what you're putting into your body — especially with a product that spoils easily.