Salted Duck Egg

1. Product Overview
The Salted Duck Egg is a traditional preserved egg product, primarily made from duck eggs that are cured either in a saturated brine solution or coated in a salt-mud mixture. The core process relies on osmotic pressure from the salt, which denatures the proteins in the yolk and causes the fat to be released and accumulated, forming the characteristic "Salted Egg Yolk." The curing process typically lasts 20 to 40 days. It is an indispensable ingredient in modern food industry and home cooking.

2. Key Characteristics

• Signature Yolk: A high-quality salted egg features a vibrant orange-red yolk with a sandy, rich, and oily texture. When cut open, the yolk often releases a reddish oil, offering a strong, savory aroma.

• Salted White: The egg white becomes very salty and firm in texture after curing. It is commonly used as a side dish with congee or rice, though sometimes discarded due to its high saltiness.

• Long Shelf Life: The high-salt environment inhibits microbial growth, making it more shelf-stable than fresh eggs.

• Versatility: It can be consumed as a standalone side dish or used as a core ingredient in various dishes and pastries.

3. Primary Applications

• Eaten Directly: Boiled and shelled, it is a classic accompaniment to congee and rice.

• Culinary Dishes: Used in famous dishes like "Pumpkin with Salted Egg Yolk" and "Tofu with Salted Egg Yolk," leveraging its sandy texture and rich flavor.

• Pastries & Dim Sum: The Salted Egg Yolk is the star filling in Cantonese mooncakes (e.g., Lotus Seed Paste with Yolk Mooncake), zongzi (sticky rice dumplings), lava buns, and egg rolls.

• Seasoning: Mashed salted egg yolk can be used to enhance sauces, hot pot dips, fried rice, etc., adding a unique savory and umami flavor.

4. Specifications & Storage

• Common Forms: Available as raw in-shell, cooked in-shell (often vacuum-packed), and individually packaged salted egg yolks.

• Storage: Raw in-shell salted eggs require refrigeration. Vacuum-packed cooked eggs can be stored at room temperature but must be refrigerated after opening.

• Modern Production: Modern manufacturing controls salt concentration, temperature, and time to ensure consistent quality and food safety.