Air carriers are easy. Even in F, the food is pre-packaged, reheated, and then plated. Or not. The carrier's catering company simply maintains a contract with a kosher caterer which delivers food, fully sealed and ready to heat and serve.
On a cruise, it is about ingredients, cooking facilities, and expertise.
This is not to suggest that you cannot find a niche capability.
Last edited by Often1; Feb 18, 2019 at 1:00 pm