Popovers: A biscuit exploded

My parents recently came back from Acadia National Park in Maine raving about popovers. Fortunately they also brought back the mix (shown below).

From their comments about how enormous these fluffy biscuits were I had some pretty high expectations. Needless to say the popovers certainly lived up to their reputation.

Here's a side profile of them...

They taste pretty similar to bread and are meant to be eaten with either butter or jam. I only wish my parents had gotten more mix!