Final answer:
While there is no universally accepted side served with pickled eggs, common accompaniments include spicy mustard sauce and pickled jalapeños, providing a contrasting flavor, and saltine crackers or bread as a neutral base.
Step-by-step explanation:
The typical side served with pickled eggs is not universally fixed and can vary based on regional preferences and individual tastes. However, some common accompaniments include spicy mustard sauce and pickled jalapeños, which offer a contrast in flavor that complements the tartness of the pickled eggs. Another common side is saltine crackers or slices of crusty bread, which provide a neutral base to balance the intense flavors. While sweet wine pickled onions could also be served with pickled eggs, they are less commonly seen as a side for this dish compared to the options that provide a spicy or neutral counterpoint.