The primary method for preserving onion water (onion juice) is refrigeration.
Refrigeration
- Storage Duration: Freshly prepared onion juice can be stored in the refrigerator for up to 3-5 days.
- Container: Always keep it in an airtight container to prevent it from absorbing odors from the refrigerator and to minimize oxidation.
- Usage: Before using refrigerated onion juice, allow it to come to room temperature. This helps restore some of its potency and aroma.
While refrigeration is the most common and straightforward method, keep in mind that onion juice will still degrade over time, even when refrigerated. For longer-term preservation, consider alternative options (though these may alter the properties of the water):
Alternative Preservation Methods (Less Common for Onion Water):
- Freezing: You could freeze onion water in ice cube trays for later use. However, freezing may affect the texture and flavor.
- Dehydration: While unconventional for just onion water, if you were processing onions anyway, you could dehydrate the entire onion and then rehydrate with water when needed. This would not be the same as preserving just the water, but it's an option for the onion's properties.
