Due to the way microwaves work, you will likely never achieve a good or consistent mushroom-shape when popping our variety of popcorn in the microwave. The characteristics you desire from our variety of popcorn can never manifest with the heating method a microwave uses. The popcorn certainly will pop and is edible but just won't be beautiful. Customers report back that they are very happy with the results of the microwave popping. As a brand, we promote and sell the mushroom shaped characteristic. Since the percentage of mushroom shapes is low and inconsistent in the microwave, we recommend popping in hot air or on the stove.