I experimented with different ingredients to make these muffins very tasty. I know you can't find Pure Pineapple Extract here, but I have a friend who lives in Hawaii and she sent me three bottles as her family makes it just for family and friends they also a specialty shop. But a friend in the lower 48 told me that I can find it in specialty shops for cooks. So that why I used the pure pineapple extract. I have also used Rum and coconut extracts they are very good to.