When our children were in college, we encouraged them to bring their friends home for the holidays. Our Passover Seder usually resembled a League of Nations. We had guests from Germany, Bangladesh, England, Italy, Canada, Denmark, and of course, our three children. One year, we had a mother of one of the students, she was a professor at the London School of Economics.
We ran a semi-traditional Seder - at one point, we eliminated all gender references and no one even seemed to notice let alone care. (The four sons became the four children.)
I cooked a traditional array of food, but, I noticed that no one seemed to really relish the gefilte fish, at all. And, since I could never eat it (or anything that swam or kept company with swimmers), I decided to make something that I would and could enjoy. I took my mother's traditional gefilte fish recipe and substituted white meat chicken for the fish. What a success! I served it with horse raddish and the guests even asked for seconds.
Time passed. We saw the Bangladesh guests a while later. He said that he was in New York, walked into a Jewish Deli, saw the gefilte fish, and his mouth started to water. "I asked them for gefilte chicken. They looked at me like I had two heads. They said that there was no such thing. I told them that yes there was, it was delicious, I ate it, and I have not been able to find it anywhere since."
Talk about starting new traditions!