Addie
Chef Extraordinaire
7 here, but that is because I don't eat bread, pasta, or rice (assumed white rice). I do eat wild rice and cargo rice. My kidney eating days are long past. I have never tried marmite. I probably would try it. Bananas I only eat in Banana bread. Not on the list that I won't eat are smoked eel and lutefisk.
My Jewish neighbor downstairs lost her father. In accordance with their customs, I went downstairs to see them and give my condolences. As is their custom, they offered me food. They asked me if I had ever had Gefilta fish. No I had not, so they gave me a tiny piece. Not even big enough to call it a bite. I now know I will never find that food on my plate either. I have the feeling it would be similar to your lutefisk.