Instructions: Given the background description of some cooking related query, summarize the question into a title
Input: My soup tastes almost like someone poured some lemon juice into it. It smells fine, and other than being a little lemony, tastes OK. When I put it in the fridge a week ago, it didn't have that tart flavor.What would cause this to happen? Is it safe to eat?The soup was made from:Chicken brothGround turkeyHamBroccoli Green beansOnion
Output:
My soup tastes tart... Is it safe to eat?