How can I make the Potato and Three Onion Gratin recipe safe for Coumadin users?

Could we lower the Vitamin K amount in the Potato and Three Onion Gratin by choosing another type of onion than leeks? Which type of onion would be best?

The Health meets Food Team Says...

This is a great question. There's a fair amount of Vitamin K in the leeks - about 38 micrograms (mcg) in the 3 ounces per serving in this recipe. Substituting a Vidalia or other sweet onion like a Walla Walla would be a great choice. If those are out of season, choosing a yellow onion would be perfect.

Thanks for writing.

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