Spicy Tomato-Onion Relish
With its cumin, curry, and chili powders, this relish doesn’t seem particularly German at first glance. But, as anyone who who’s been to Berlin will attest, currywürst—sausage with tomato sauce that’s sprinkled with curry and spices—is an überpopular street food there.
1. Heat oil in large skillet over medium-high heat. Add onions, and sprinkle with salt. Cook 7 to 9 minutes, or until onions are browned, stirring occasionally. Stir in chili powder, cumin, curry powder, and cayenne; sauté 2 minutes, or until spices are fragrant.
2. Add tomato paste and 1/2 cup water. Cook 5 to 6 minutes, or until most of water has evaporated, and onion mixture is thick enough to coat a spoon. Season with salt and pepper, if desired. Cool to room temperature before serving.