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.
Lemon Juice: A Classic Technique
Squeezing a bit of lemon juice over the surface of the avocado is a tried-and-true method. The vitamin C in citrus slows the chemical reaction that causes browning, while adding a light, fresh flavor.
No lemon? Lime juice or a splash of white vinegar will also do the trick.
4. Olive Oil for an Air Barrier
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