Since the SCP Foundation involves a lot of dark and often inappropriate content, it's hard to define 'key elements' in a positive way. But if we assume a more positive take, maybe the old man's age and the wisdom that comes with it could be a key element. His appearance, perhaps with a long white beard and wrinkled face, might also be characteristic.
The SCP series often contains disturbing and inappropriate content. However, if we consider a more general 'old man' story in a non - SCP inappropriate context, it could be about an old man with a lot of wisdom and experiences. Maybe he has seen the town grow and change over the years, and he likes to share his memories with the younger generation.
In the novel My Uncle Yule, the food related to Yule was bread and cheese. Ule was a French businessman. He ran a business in Paris and often took his wife and children back to his hometown for a holiday. In the novel, Ule's main source of food was his trading business, but he would also prepare some delicacies at home, including baking bread and making cheese.
The SCP Foundation is purely fictional. It's a collection of imaginative and often creepy stories and characters that are made up for entertainment purposes and have no basis in reality.