1. Roughly chop the tomatoes. Grate the ginger and mince the garlic. Heat the oil in a medium saucepan and gently sauté the chopped onions, grated ginger, minced garlic and crushed red pepper 5 minutes.
2. Add tomatoes and cook for 5 minutes. Stir in vinegar and sugar and simmer for 10 minutes, stirring frequently, until mixture thickens. Season with salt (in moderation) and pepper.
3. Pour the relish into a 1 pint preserving jar, close immediately, and let cool. Store in the fridge.
Per serving: 45 calories, 2g fat, 0g saturated fat, 0mg cholesterol, 4mg sodium, 7g carbohydrate, 1g fiber, 5g sugar, 1g protein