Quick and Easy Indian-Style Okra

INGREDIENTS

• 1/3 cup vegetable oil
• 1/4 teaspoon mustard seed
• 1 pinch asafoetida powder
• 1 medium onion, thinly sliced
• 1 clove garlic, peeled and sliced
• 1/4 teaspoon cumin seed
• 1/8 teaspoon ground turmeric
• 1 large tomato, chopped
• 1 (16 ounce) package frozen sliced okra
• 1/4 teaspoon chili powder
• 1 teaspoon amchoor
• salt to taste