Loved the ease at making popcorn. No more shaking the pan on the stove.  Book suggested vegetable oil or grape seed oil.  I don’t like using vegetable oil so I used the grape seed oil and it was great.  And by the way, you can make your own, healthy popcorn salt by grinding your salt of choice (I used Himalayan) and grind it in your handy little coffee grinder (dedicated to spices not to grind coffee) and it gets so fine and clings to the popcorn-Yum!  I also ordered Organic popcorn with 4 1/2 - 5 star rating.