Thanksgiving Samosas with Green Chutney

Name: Thanksgiving Samosas with Green Chutney
Ingredients: 3/4 cup plus 2 tablespoons all-purpose flour, plus more for dusting; 1/4 teaspoon kosher salt; 2 tablespoons grapeseed oil, plus more for drizzling; 1/4 teaspoon ajwain seeds; 1/4 teaspoon nigella seeds; 1/4 to 1/2 cup cold water; 1 very small red onion, finely diced; 1 serrano chile pepper, seeded and minced; 1 2-inch piece fresh ginger, peeled and julienned; 1 1-inch piece fresh turmeric, peeled and minced; 2 tablespoons grapeseed oil; 3 tablespoons dried cranberries; 3 tablespoons frozen peas; Kosher salt; 1 russet potato, cooked, peeled and mashed; 1 cup cubed cooked turkey or rotisserie chicken (1/2-inch cubes); Fresh lime juice and chopped fresh cilantro, for sprinkling; Vegetable oil, for frying; Flaky sea salt, such as Maldon; 1 bunch cilantro, leaves and tender stems; 1/2 bunch mint, leaves only; 4 to 5 scallions, chopped; 1 garlic clove, chopped; One 1-inch piece ginger, peeled and chopped; 2 tablespoons rice wine vinegar; juice of 1 lime; juice of 1 Meyer lemon; 1 chopped serrano chile; 1/4 cup crème fraîche