What is the fine-grained topic of the following text: It was Jean-Luc who was the first chef here in Vermont to champion our alpaca, and he worked with us on developing the 18 recipes that would eventually become the Cas-Cad-Nac Farm Cookbook. Only return the topic.
Jean-Luc's contribution in developing alpaca recipes for the Cas-Cad-Nac Farm Cookbook.