Aloo Samose 4 tbsp. unsalted butter, softened 2 tbsp. canola oil, plus more for frying 1⁄ 2 cup fresh or frozen peas 1 (1") piece ginger, peeled and minced 1 small hot green Indian chile, stemmed, seeded, and minced 1 1⁄ 2 tsp. fresh lemon juice 1 1⁄ 2 tsp.