One surprising method is to store your avocado with red onion slices. Just place a few slices in the same container, making sure they don’t touch the avocado flesh.
The onion releases sulfur compounds that act as natural antioxidants, helping slow down the browning process.
Bonus tip: Store the avocado in an airtight container with the pit still intact. This can help maintain freshness even longer.
2. Ice Water to Slow Oxidation
Soaking avocado halves in ice-cold water is another effective way to preserve their green color, especially if you’re prepping in advance for an event.
It works well for short-term use, though it’s not ideal for storing overnight — the extra moisture can make the flesh a bit mushy.
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