
Apple cider vinegar is the star here, bringing natural acidity that supports a balanced gut while transforming raw red onion into something vibrant, tangy, and almost addictive. The quick brine comes together in minutes on the stovetop โ just vinegar, water, a touch of sugar, and salt โ then gets poured hot over tightly packed onion slices so they soften just enough while keeping a satisfying bite. Black peppercorns add a gentle warmth, and a pinch of red pepper flakes can kick things up if you're feeling bold. What makes this approach so appealing is how clean and straightforward the ingredient list is โ no preservatives, no mystery additives, just real food doing its thing. Within 30 minutes of cooling, the onions turn a stunning fuchsia pink and are ready to pile onto tacos, grain bowls, salads, eggs, or anything else that needs a bright, punchy lift. Keeping a jar in the fridge means you always have a gut-friendly condiment on hand that actually makes meals more exciting rather than feeling like a compromise.
Fig is a food discovery app that helps you find foods and recipes that fit your dietary needs. Whether you have food allergies, intolerances, or follow a specific diet, Fig makes it easy to eat with confidence.
Learn more โ8 servings







Pack the sliced red onion into a clean 16 oz mason jar, pressing gently so the slices fit snugly without crushing them.
Combine the apple cider vinegar, water, sugar, and kosher salt in a small saucepan over medium heat, stirring until the sugar and salt are fully dissolved, about 2โ3 minutes. Remove from heat.
Create a Fig account for step-by-step instructions, access to our full recipe library, and more!
