Yogurt with Raisins, Cucumber, and Walnuts

Mast, which translates to yogurt in Farsi, is a staple side dish on many Persian tables. The yogurt can be mixed with shallots, grated cooked beets, cooked spinach, or, most commonly, with Persian cucumbers, mint, and dried rose. Serve this with our herby rice recipe.
Recipe information
Yield
Makes about 3 1/2 cups
Ingredients
Preparation
Step 1
Preheat oven to 350°F. Toast walnuts on a rimmed baking sheet, tossing occasionally, until golden brown, 8–10 minutes. Let cool, then finely chop.
Step 2
Mix walnuts, cucumber, yogurt, raisins, green garlic, lemon zest, lemon juice, 1 Tbsp. mint, 1 Tbsp. oil, and 2 tsp. rose petals, if using, in a medium bowl to combine; season with salt and pepper. If yogurt looks thick, stir in milk as needed.
Step 3
Serve topped with Aleppo-style pepper and more dried mint and rose petals and drizzled with more oil.
Do Ahead
Step 4
Yogurt can be made 1 day ahead. Keep chilled.