The recent Penguin events got me thinking: frozen fruits and vegetables! Perhaps a Freezer (or a blast chiller) could be introduced to allow us to make items like the Frozen Berries that were needed in the Penguin event, and maybe even introduce the new crops of Pineapples and Kiwis (and possible a few others). Then items similar (or identical) to the ones from the event could be made into permanent (or seasonal?) recipes without needing to wait for randomly dropped items from different places.
These frozen berries could then be used in the Ice Creamery for some kind of new dessert, or in the Ice Creamery or Caf? for some sort of smoothie recipe.
Something else that could be a product crafted from this Freezer might be sorbets or granitas, using items from the Cider House or the Juicer.