The Instagram stars Christian Krömer and his grandmother Lissi are already very popular with their followers. With the cookbook that they published together with Michelle Schrenk, Christian has made his grandmother immortal.

Since the death of his grandfather 10 years ago, Christian visits his grandmother almost every day to spend as much time with her as possible.

The Freizeit Revue magazine also enjoyed the touching story of the two and dedicated a whole page to them.