3 tablespoons canola oil
1 medium onion, finely diced
4 cloves garlic, minced
1 (1-inch thumb) fresh ginger, peeled and minced
2 teaspoons ground coriander
1 teaspoon paprika
1/2 teaspoon store-bought or homemade garam masala, recipe follows
1/2 teaspoon ground cumin
1/2 teaspoon cayenne, optional
1 pound ground beef
2 medium tomatoes, chopped
Kosher salt and freshly ground black pepper
1 cup shucked fresh English peas or 1/2 cup frozen peas, thawed
2 teaspoons malt vinegar or apple cider vinegar
1/4 cup chopped fresh cilantro, plus a few extra leaves for garnish
4 chapatis or pitas, warmed