If you are looking for a term that will fit any section on the menu - entrées, fowl, pasta, soups, desserts, beverages - then it's got to be item or choice

If you are looking for a term that will fit any section on the menu - entrées, fowl, pasta, soups, desserts, beverages, etc - then it's got to be item, listing or choice

• item - "a thing or unit, esp included in a list or collection" The Free Dicitonary

• listing - "something that is listed" Merriam-Webster

• choice - "Other choices on the menu looked equally tempting." Merriam-Webster

If you are looking for a term that will fit in "entries", "desserts", "drinks", etc. then it's got to be item.

If you are looking for a term that will fit any section on the menu - entrées, fowl, pasta, soups, desserts, beverages - then it's got to be item or choice