Ingredients

2 tablespoons vegetable oil (such as safflower) 

1 medium onion, chopped 

2 garlic cloves, minced 

1 tablespoon minced peeled fresh ginger 

2 cans (14 1/2 ounces each) diced tomatoes in juice or 2 pounds fresh plum tomatoes 

1/2 cup red-wine vinegar 

1/2 cup packed light-brown sugar 

1/2 cup golden raisins 

Preparation

In a medium saucepan, heat oil over medium. Add onion, garlic, and ginger. Cook, stirring, until onion is softened, 5 to 7 minutes. Add tomatoes, vinegar, brown sugar, and raisins. Simmer, stirring occasionally, until thick and jamlike, 35 to 45 minutes. Cool completely.