Recently holidayed in Central Otago and found the following location who went out of their way to assist with delicious Gluten Free meals/food.
Shaky Bridge Vineyard Cafe, Graveyard Gully Rd, Alexandra: menus did not state they serve any gluten free items but if you ask they will alter anything they can for you to ensure it is gluten free. Delicious menu open from morning to evening.
BioRevive Gluten Test 5 Minute At
Home Test for Gluten Intolerance.

