If you think honey is made from flower nectar you are only partially correct. An important part of the process is what happens inside the bee. Bees use their digestive systems to process the nectar by swallowing and regurgitating it several times before finally depositing it into the honeycomb for evaporation and storage.
While this sounds gross, it helps remove some of the water and natural yeasts present in the nectar, which could otherwise cause the sugars to ferment. Ripe honey is shelf stable and never spoils. Honey comes in various tastes and colours, depending on the type of flower nectar the bees collected. For example, clover honey is mild tasting and light in colour whereas buckwheat honey is bolder tasting and darker. Honey may also darken or become a bit stronger tasting with age, but will keep indefinitely in a sealed container at room temperature. If older honey crystallizes, simply warm it up until it turns clear.