Honey jars are used to sweeten an idea, a spirit. Money is a spirit, the spirit of the person in the jar, etc. They sweeten the target up to the worker for various reasons.
The ingredients used will depend on the situation. I would use different herbs and objects for a money honey jar than a love honey jar. So, figure out what's best for the situation. It can be as simple as a photo, petition, and the sweetener.
The sweeteners used in the jar, however, will effect the overall "spell." Honey is slow pouring and will take more time and work for results. Sugar and syrup pours faster than honey, so the work will be faster, but honey will crystallize after a while, setting the work in stone. The trick is to work on the honey jar as much as possible, have it contain powerful ingredients, heat it, set lights on it, etc before the work crystallizes. Once a work stops moving, it's stopped. If you never work the jar, it just sits there.
Honey jars are really popular, but there are other ways to sweeten people.