The dream about vinegar is, as a rule, adverse. If in a dream you drink vinegar, then in reality you will be upset and angry as you will be involved in the business causing in you bad presentiments. If dreamed you that you cook food, adding to it vinegar, then your affairs will even more worsen.
Subject: Food
Look also: Is Food To drink
Be sure and keep any other thoughts out of your mind before drifting to sleep as a cluttered mind can decrease the chances that you will remember your dreams upon waking. Also, focusing on remembering your dreams upon waking in the morning is another very important thing. This sounds very easy, but is often hard for some to do. Interpret a dream by "dictionary dream of interpretation"
When you very first wake up, simply think about your dreams. Don't allow your mind to drift off to other things, just lay there and think about the things you dreamt about the night before - dictionary dream meaning.