[Ingredients]
Water 1000g (4 Cup+⅙ Cup)
non-iodized sea salt 50g (3 Tbsp)
Sodium Hydroxide (Food Grade) 50g (3 Tbsp)
Tea 25g (½ Cup)
Fresh Duck Eggs 12
Steps to make century eggs:
1. Boil water, add tea leaves, let cool, and set aside;
2. Wash the duck eggs, soak for 15 minutes in water and clean with a scrub sponge. Remove the cracked eggs. Rinse and dry the eggs;
3. Drain the tea leaves and discard them. Add non-iodized sea salt and food grade sodium hydroxide to the cooled tea water, stir until combined;
4. Add the dried eggs to a PLASTIC container, press with a bag of sealed water. Add the sodium hydroxide solution and let the eggs be submerged. Cover with an airtight lid and date for your reference. Place in a temperature-stable place close to the floor, with no direct sunlight, such as in the cabinet. Do not move the container ever since. Wait for 1~2 weeks, the waiting time is closely related to your room temperature and size of eggs. The higher the temperature, the less time. The room temperature in the video is about 15C(60F), the medium-sized eggs are soaked for 14 days; To be precise, you’d better take out 1 egg and check the inside. The over-soaked eggs have a watery end, with a stronger alkaline smell. The egg white will be too soft if soaked not long enough.
5. When the egg white is set, the yolk is a little runny, they are good to be removed from the container; Seal in airtight plastic bags, vacuum bottles, or bags, or seal with wax for a few more days and the eggs are ready. Open the wrapping 3~5 days before you eat. The eggs are ready to eat, no need to be cooked. Best served with ginger vinegar sauce.
Safety tips for the use of sodium hydroxide:
1. Sodium hydroxide is a strong base, rubber gloves must be worn for operation, and goggles and masks are highly recommended;
2. Sodium hydroxide must be poured into the water, and not vice versa. Pour the water into the sodium hydroxide may cause the corrosive liquid to splash and cause danger;
3. All containers and tools that contact sodium hydroxide should be made of plastic. Glass, stainless steel, other metals, and wood will all react with sodium hydroxide to ruin your container;
4. The used sodium hydroxide solution can be diluted with water and discarded into the sewer.
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