A great riff on traditional tabbouleh, using kale instead of parsley, and walnuts instead of bulgur. The crunch of the apple and the tang of the onions make this a flavourful salad side. Or even a main dish.
Sumac Pickled Onions:
In a small bowl, toss the onions with the red wine vinegar, sumac and salt. Let the onions macerate for at least 30 minutes, stirring occasionally.
Make ahead: The pickled onions can be made, covered and chilled for up to 3 days. You will only need 1/4 cup of these onions for the Tabbouleh. Save the rest for grilled meats, on sandwiches etc.
Tabbouleh:
In a separate large bowl, combine all of the tabbouleh ingredients and toss.
Taste and adjust the seasoning with salt. Sprinkle with more pomegranate seeds and serve.
You will only require 1/4 cup of these onions for the dressing for the tabbouleh. Save the rest of the onions for adding to sandwiches, grilled meats etc.
I actually add the lemon juice, olive oil and extra salt (to taste) from the Tabbouleh ingredients, to the 1/4 cup of onions needed for the tabbouleh after the macerating is complete. I treat this as the entire dressing. It can keep this way in a small jar till needed.
This way it will not wilt the salad if you want it to last for a few days.
Obviously if you are serving it all at once, then don't worry about creating a dressing!
This will feed 4 to 6 people depending on whether it is a side, or the only side. If it is a meal, as how I treated it, definitely only go with 4 people.