Oh, Cynthia, where to begin? This is brilliant!
I don't know if you've come across the growing community of Family Historians gathering on Substack, but I think I can safely say that many of us would be thrilled by this idea as a project with a family twist.
I brought my community to Substack nearly 18 months ago, and we've focused on inspiring each other with platform-independent ways to capture our family memories as stories in a range of forms.
Here's what you have me thinking of... what if you were to take this idea to a group of family members (at a holiday, reunion, or other gathering of cousins) then, explicitly ask family members to bring that dish with that family recipe. During the festivities, you bring individuals into a little instant recording booth (a closet with a ring light and a phone will do) and have someone interview them. Capture those recordings with the collected recipes, and «POOF,» you've got a multimedia memory book of family traditions.
I think this would be especially fun during holidays important to a family's ethnic roots, such as Eid al-Fitr, Lunar New Year, or Diwali, for example.
Let me know if this is something that might interest you, or if you know someone who might be interested in pursuing the idea. I'm excited and would love to celebrate it in one of my published Project Recipes, and host their description of it as a project in an online event.
You can see some of the "Project Recipes" our members have done at projectkin.org/recipes. Interestingly, only a few of them are related to food. 🍽️ 
