I didn’t try the 7-11 Japanese egg salad, but I loved the 7-11 Chicken katsu sandwich. The 7-11s had cello-wrapped Basque cheesecake, too!
My egg salad is: chopped egg, Hellman’s mayo, fresh lemon juice, chopped dill or sometimes chopped basil.
Love a Tunisian tuna & egg sandwich / Caisse-croûte, and Sabich, as alternatives to egg and mayo.
CoronationEgg Salad, too.
Olivier/ Russian Salad from this thread: I love vegetables. Ideas for a vegetarian dinner. Not a big production . is nice in a sandwich, too.