Hello everyone! If this is your first visit after seeing my segment on Studio5, welcome—I’m so glad you’re here. Below you’ll find my tests comparing three easy ways to keep apple slices from browning. I repeated the experiment twice (my kids kept sampling the fruit!), and each comparison photo shows the same apples after 2 hours and after 24 hours so you can clearly see the difference.
The three methods are: the classic lemon juice soak, a vitamin C (ascorbic acid) soak using an Emergen-C packet or crushed vitamin C tablet, and a mild salt soak. Read on for the results and a quick explanation of why each method works.
Lemon Juice Method
1 TBSP lemon juice + 1 cup water + 1 sliced apple. Soak 5 minutes.
Left: after 2 hours. Right: after 24 hours. Lemon juice is the traditional method and does slow browning, but in my test it performed the least effectively of the three. It still helps for a short period, and you can use undiluted lemon juice if you prefer stronger protection, though that will add tartness to the apple flavor.
Vitamin C Method
1 Emergen-C packet (tangerine or orange preferred) + 1 cup water + 1 sliced apple. Soak 5 minutes.
Left: after 2 hours. Right: after 24 hours. The Emergen-C soak performed best in my trials. Apples treated this way remained largely unspotted even after extended time. Vitamin C (ascorbic acid) and citric acid inhibit the enzymes that cause browning, which is why crushed vitamin C tablets, Emergen-C, or pure citric acid (sold as Fruit Fresh or similar) are effective options. Note that flavored mixes may add sugar and taste.
Salt Method
1/8 tsp salt + 1 cup water + 1 sliced apple. Soak 5 minutes.
Left: after 2 hours. Right: after 24 hours. The salt soak was my second-favorite method. Using only a tiny amount of salt prevents most browning and is effectively undetectable in taste. Salt has long been used as a preservative and helps slow the enzymatic reaction that turns apple flesh brown.
Conclusion: I recommend the salt method for everyday use—it’s inexpensive, uses a negligible amount of salt that won’t affect flavor, and works nearly as well as the vitamin C option. If you want the longest-lasting visual result and don’t mind a flavored or sweetened mix, the vitamin C/ascorbic acid method is the most effective. Lemon juice is convenient and natural but provides the least protection of the three.
Do you have another favorite method for keeping apples from browning? I’d love to hear what works for you.
If you enjoy fruit with dip, check out my Coconut Cream Fruit Dip recipe—it pairs wonderfully with apples and other fruit.
