Heirloom recipes...Am I crazy?

I love cooking and have many fond memories growing up cooking with my Grandmas as well as mom.  Great conversation, scrumptious food, and lasting bonds were created in the kitchen.  As my Grandmas have begun to age and my interest for cooking has increased, I've decided to try to start a journey of heirloom recipes.  My goal is to archive all these great recipes into one cohesive place so that whenever I want a dish from home, I know where to turn.  There will be one VITAL missing ingredient during this process, my Grandmas and mom.  Attempting to cook these German dishes is definitely going to be a learning process but one that will last for generations...A guarantee that the dishes passed down from ancestors will be around for future family members!