Easy Kale Salad with Red Onions

Illustrated kale leaves with a tub labeled FETA and a small vinegar bottle on a blue background

American Vinegar Works Kale Salad with Red Onions

We just can’t get enough of this simple kale salad. It is super easy, versatile, and makes for a fantastic healthy weekday side dish or meal prep base that holds up beautifully in the fridge.

Featured Ingredients

This recipe features our crisp Cranberry Apple Cider Vinegar and premium California Extra Virgin Olive Oil, opens in a new tab. Looking for a different flavor profile? You can easily substitute it with any of our other fruit-forward Apple Cider, opens in a new tab and wine vinegars.

Why Massaging Kale Matters

  • Softer Texture: Drizzle your kale leaves with a splash of olive oil and a pinch of salt, then use your hands to firmly massage the leaves for 2 to 3 minutes until they turn dark green and tender.
  • Better Flavor Absorption: Massaging breaks down the tough fibrous structure of raw kale, allowing our Cranberry Apple Cider Vinegar to soak in and fully brighten up the salad.

Which vinegar to use, and why

Kale is tough and needs acid to break it down. Cider vinegar does that and brings fruit rather than only sourness. We use 19.53 Miles From The Tree Apple Cider Vinegar here. It is slow-fermented and aged in oak at our mill in Worcester, Massachusetts, which is why it seasons the dish rather than just souring it.

Make it ahead and keep it

One of the few salads that improves after dressing. Give it twenty minutes before serving.

What to cook next

Try Kale & Pretzel Salad, or browse all our vinegar recipes. If you have not cooked with craft vinegar before, a mini bottle sampler set lets you taste across the range before committing to a full-size bottle. Orders over $85 ship free within the contiguous US.

Kale Salad with Red Onions

American Vinegar Works

Servings

2–4 People

Prep Time

20 minutes

Cuisine

Modern American

Category

Side

This Kale Salad with Red Onions is a versatile and hearty side dish that relies on a simple yet effective "pickling" technique. By soaking red onions in Cranberry Apple Cider Vinegar, you soften their bite while infusing the salad with a bright, fruity acidity. Because kale is so robust, this is a rare salad that actually improves by being dressed a few minutes before serving, allowing the feta to break down and create a creamy coating on the leaves.

Kale Salad with Red Onions

Ingredients

  • Kale (12oz package or bunch torn into small pieces and with hard stems removed)

  • Half of red onion thinly sliced in half moons

  • 4oz feta (try Bulgarian feta for the extra tang)

  • Salt/Pepper

  • California Extra Virgin Olive Oil

  • Cranberry Apple Cider Vinegar

  • Mustard speck to emulsify

  • For finishing: Pita chips or large dry pretzels

Directions

  1. Soak the thinly sliced red onion in a small bowl with either the Cranberry Apple Cider Vinegar. Let the onion soak at least ten minutes. Remove and toss onions over kale in large bowl. Crumble or roughly chop around ¼ cup of feta and add to salad. Now make a vinaigrette using the leftover soaking vinegar and our standard recipe (find it online or on our recipe card that came with your purchase).

    Normally I recommend waiting to add the vinaigrette until right before serving so that your greens do not wilt. This one is different. Kale is so hearty that it can take more of a beating. I suggest you add the vinaigrette about five to ten minutes before serving for the best flavor. Get tongs and aggressively blend in vinaigrette with feta into the kale. What you want is the feta to crumble further and begin to create a light coating on the kale leaves.

    Immediately before serving crumble in pita chips or pretzel pieces (watch the salt if using pretzels)—you want these additions to keep their crunch. Adjust salt and pepper as needed. Serve with simple grilled proteins like salmon or steak.