tortoise
Wild Hare
NCHFP says no for shelf-stable pickled eggs. I make them for the fridge sometimes. My kids' favorite recipe is a pineapple flavor from the link below. Link below also covers food safety for pickled eggs.
https://nchfp.uga.edu/how/can_06/pickled_eggs.html
https://nchfp.uga.edu/how/can_06/pickled_eggs.html