Linda From Maine wrote:
A friend has the snack size. It's very tiny and leaves many kernels unpopped. If you're thinking of the larger size, you will need a fairly large microwave oven.
If you purchase on amazon, should be easy to return as it is sold and shipped by them directly.
Best way to pop from kernels I discovered: use heavy pot with cover, on stovetop. Use avocado oil. Use Bob's Red Mill White Popcorn. Simply salt to taste when done, don't add butter. Fantastic!!!
I just cheat.
The plastic lid on the jar of kernels makes a good measure.
Place in paper bag, roll the top twice , nuke for 2 minutes.