I just saw someone's entry listing foods to avoid, and wanted to add a
thought.
While this user listed soy products including milk and tofu, I think
most know that varies from person to person. And that avoiding spicy
foods is basic to treating rosacea.

My point is: while there are the basic and obvious foods to avoid
everyone has their own triggers or food "intolerances."

If this is the case and your rosacea won't clear with typical methods,
I strongly advise you to have blood drawn and have allergy testing done.
My wise dermatologist urged me to do this and I discovered I have a
medium range yeast intolerance (along with wheat and corn). And because
yeast is already a rosacea antagonist, it was that much worse for me.

It's been about a month and I have seen dramatic improvement since
cutting breads, vinegars, and cheese flavorings (yeast extract) out of
my diet.

My point: you can sit around forever eliminating and re-adding item
after item to your diet. With a panel test, you'll know in a week or
less what's keeping your rosacea inflamed.