Sodium silicate refers to a group of chemical compounds that include sodium metasilicate, sodium orthosilicate and sodium pyrosilicate.
Waterglass eggs are fresh eggs placed in a bucket filled with a waterglass solution.
Some people leave the eggs in the solution. Others remove the eggs after being immersed and allow the solution to dry on the egg. This provides a protective layer that keeps out bacteria and keeps in moisture.
The eggs can be preserved in this manner without refrigeration for several weeks or months.
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