Job title for someone who makes ice cream/gelato?

I've been the sole gelato maker at our coffee shop, and been at this specific gig for over 16 years. I develop recipes, make the product, and manage the whole gelato aspect of the business, inventory, ordering, ideas.

I haven't been to school; I was just trained by the previous part-time girl who was working at the time. I quickly expanded my knowledge and wanted to learn the science, and have now spent almost two decades at this and see no end in the near future.

If I have a job title, what do I call myself? Chef? Confectioner? Gelatier? (Right now it's just "gelato fairy" lol).