It turned the water very deep indigo . When several more rinses failed to show a decrease in the amount of dye loss , I tried a vinegar rinse . That water came up clear , so assuming the problem was arrested , I got one more pan of cool water to rinse some of the vinegar smell from the shawl .

Question: Why was the narrator using vinegar ?
Answer: To deal with the cooking .To deal with color loss .To make the food item more bitter .None of the above choices .