Tutorial to swap out food choices?

I want to make a themed banquet or festival table for my seasons parks. I've looked everywhere for this but I cannot find a tutorial on how to swap out recipes. Like Macaroon multi servings to Vanilla Cupcakes Multi serving for the banquet tables. I've seen the tutorial for adding new recipes to microwaves, but it doesn't seem to work for this. The only object I've been able to find in banquet tables from NekoMimi. nekomimi-m0de.tumblr.com/post/159406625376/ice-cream-buffet-table Which is what I want to do exactly. I've tried messaging her, but so far no luck. I know how to swap out tuning and what not, so I have a basic idea. The problem I'm having is swaping this <T n="spawnerdata_reference">141189<!--spawner_Festival_FoodTable_Nigiri--></T> to Example-Custom String like this <T n="spawnerdata_reference">141189<!--spawner_Festival_FoodTable_VanillaCupcakes--></T>. I have no idea how to extract tuning from custom tuning threads, like the one from Nekomimi Buffet Tables, so I can look and see how it's done. If there is a tutorial out there that can help, please please share. 

Thanks a Bunch Julia