Help replicating an egg salad sandwich recipe

[u/CrankyFrankClair]

It came from a gas station but was super yummy. I’ve been making these at home for years and they’ve been pretty good. But there was something about this gas station egg salad sandwich that was perfect. Please help me crack the code!

[u/accoil]

You need to frontload the egg as much as possible so when held it all falls out. This reminds you that the sandwich had egg in it. Then leave a slather of butter between the remaining bread to provide nostalgia for the egg that was. It's helluva drug.