Buckwheat Salad with Goat Feta and Smashed Cucumbers Recipe

Name: Buckwheat Salad with Goat Feta and Smashed Cucumbers Recipe
Ingredients: 1 cup white vinegar; 1/2 teaspoon sugar; 1/2 teaspoon black peppercorns; 2 cloves garlic; several sprigs fresh dill; 1 English cucumber; 1 cup buckwheat groats; 2 cups pea shoots or other farmers market greens; 4 ounces goat feta (or you can use regular sheep feta); 2 tablespoons best-quality extra-virgin olive oil; juice and zest of one lemon; 1/2 cup fresh mint; 1/2 small red onion; Kosher salt and freshly ground black pepper