Ingredients:
1 cupwheat berries
3/4 cup(107 grams) whole hazelnuts
2 cupsvegetable stock, plus more as needed
1 teaspoonkosher salt
1 small red onion
1 dried bay leaf
White vinegar, for pickling
8 ouncesradishes, preferably a mix of varieties, thinly sliced
2/3 cupchopped curly parsley
4 strips lemon peel (remove any white pith), very thinly sliced
1 teaspoonfreshly squeezed lemon juice
2 teaspoonssherry vinegar
3 tablespoonsextra-virgin olive oil, plus more for drizzling
Freshly ground black pepper, to taste
1/4 teaspoonflaky salt, plus more to garnish
4 ouncesfeta cheese
1 large ripe avocado
2 sprigs mint, leaves pulled from stems
Directions:
Heat the oven to 400°F. Spread out the wheat berries on one rimmed sheet pan and the hazelnuts on another. Toast the wheat berries for about 10 minutes, until golden. The hazelnuts might need longer—keep toasting until they’re deeply golden, 5 to 10 more minutes, lowering the oven temperature if needed.
Transfer the wheat berries to a saucepan, add the stock (if it doesn’t cover the wheat berries, add a little more), and bring to a boil. Cover the pan with its lid and lower to a simmer. Cook the wheat berries for 45 to 90 minutes, until chewy-tender, adding more stock or water along the way if the pan ever gets dry. Season with the salt if needed, return the lid, and remove from heat.
While the wheat berries cook, halve, peel, and thinly slice the onion, preferably on a mandoline. Pack the slices into a small jar, nestle in the bay leaf, and press down. Top with enough vinegar to cover and replace the lid. (This step can be done up to 1 week in advance—store in the fridge.)
Place the toasted hazelnuts into a wide sealable container, close, and vigorously shake for 5 to 10 seconds. Sort the nuts from their papery skins, then gently crush or roughly chop half of them.
In a medium bowl, combine the radishes, parsley, lemon peel and juice, vinegar, 2 tablespoons of oil, pepper, and flaky salt. Toss to combine.
Strain any unabsorbed stock from the wheat berries, then transfer them to a serving bowl or platter and toss with the remaining 1 tablespoon of oil. Add the radish mixture and toss to combine. Taste and adjust the seasoning as needed.
Scatter about half of the hazelnuts on top, reserving the rest for people to add tableside. Crumble the feta into a few hearty wedges and arrange in on top, then nestle a generous pile of pickled red onions alongside. Halve the avocado and remove the pit. Cut it into slices, then scoop slices from the skin. Add next to the feta and onions and sprinkle with flaky salt. Drizzle oil and grind pepper over everything, then finish with the mint.