instruction:
Given the background description of some cooking related query, summarize the question into a title
question:
I have an open bottle of lemon juice that I've been keeping in the fridge. I just took it out to dress a salad and it fizzed like soda when I opened the bottle and smells like... took me a minute to place it... yeast. What's going on? Should I throw it out?
answer:
Why is my lemon juice fizzing and smelling like yeast?

question:
How long does fresh parsley stay good if kept in a refrigerator?
answer:
How long does fresh parsley keep in the fridge?

question:
It has flavor, but its consistency is too thin.Will letting sit over medium low heat evaporate enough to increase its density or is this useless?Would bringing it to a boil help more. I don't want to ruin its flavor and am afraid bringing it to a boil with high heat will do just that.
answer:
My tomato sauce is very watery