Cook until easily pierced with a knife, 25 to 30 minutes.

Boil them just until they are easily pierced with a fork.

Bring to a simmer, and cook until easily pierced with a knife but still firm.

Boil until their centers can be pierced easily with a knife, about 12 to 15 minutes.

It easily pierced our shields, and seems to have dazed you for a few minutes.

The wall that I had built around my heart was a strong one by that point, and not easily pierced.

Bake for one hour and 30 minutes, or until the potatoes can be easily pierced with a fork.

Reduce the heat and simmer until the potatoes can be pierced easily with a fork, about 10 minutes.

Add potatoes and boil until they can be pierced easily with a sharp knife.

Turn the caps over, and grill another minute or two, until a knife can easily pierce the cap.