Ask Dr. Potato

With 653 posts, chances are there's already an answer to your question. Please try searching below before submitting a question to Dr. Potato. Use multiple words to help narrow down the results. For example, search for "potatoes" and "group" if looking for an answer on cooking potatoes for large groups.

Back To Dr. Potato Home

Why Is There A Pink Streak In My Russet Potato?

Q:

I recently cut into a russet and it had a long line of pink running across top. Looked like I cut it in half and ran a pink highlighter across the length about 1/4 inch from the side. Is that normal?

A:

Most often, a pink or purple streak thru the potato is caused by cold weather during the growing season. Sometimes it is a potato reverting back partially to another variety that may have been crossed with the original at one point. Worst case scenario, is if the colored part turns soft, from a disease known as pink rot. This usually develops in affected tuber tissue when the potatoes are cut and exposed to air for 15 to 30 minutes.