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Always Thought Cardinal Rule of Cast Iron Was To Not Cook Tomatoes

Posted on 9/12/18 at 11:29 am
Posted by Rouge
Floston Paradise
Member since Oct 2004
136811 posts
Posted on 9/12/18 at 11:29 am
Has that rule changed?

LINK

This video has several videos with them doing just that. Maybe it is because the cooking is done relatively quickly?

I thought the acids messed with the seasoning.
Posted by iheartlsu
Nashville
Member since Sep 2005
27725 posts
Posted on 9/12/18 at 11:33 am to
Tasty is a buzzfeed company so maybe not the best source.
Posted by TomSpanks
Baton Rouge
Member since Dec 2005
1021 posts
Posted on 9/12/18 at 11:42 am to
From : Serious Eats


The Reality: In a well-seasoned cast iron pan, the food in the pan should only be coming in contact with the layer of polymerized oil in the pan, not the metal itself. So in a perfect world, this should not be a problem. But none of us are perfect and neither are our pans. No matter how well you season, there's still a good chance that there are spots of bare metal and these can indeed interact with acidic ingredients in your food.

For this reason, it's a good idea to avoid long-simmered acidic things, particularly tomato sauce. On the other hand, a little acid is not going to hurt it. I deglaze my pan with wine after pan-roasting chicken all the time. A short simmer won't harm your food, your pan, or your health in any way.
Posted by LSUBoo
Knoxville, TN
Member since Mar 2006
101919 posts
Posted on 9/12/18 at 11:45 am to


I usually use an enameled dutch oven for things with a tomato base.
Posted by vistajay
Member since Oct 2012
2499 posts
Posted on 9/12/18 at 12:14 pm to
I cook meatballs with red gravy, chili and similar foods in my cast iron all the time, with no adverse effects. But I inherited it from my Mom and it is at least 50 years old, so well seasoned.
Posted by CoachChappy
Member since May 2013
32539 posts
Posted on 9/12/18 at 12:25 pm to
quote:

Cardinal Rule of Cast Iron Was To Not Cook Tomatoes

That is incorrect. You should avoid tomatoes based gravies and beans until you develop a nice seasoning layer. I make chili in mine all the time. I will usually do a tune up seasoning after.
Posted by Smeg
Member since Aug 2018
9302 posts
Posted on 9/12/18 at 1:07 pm to
My wife didn't know this and made meat sauce in red gravy a few times, where everything simmered for an hour or so. Each time the tomato sauce was bitter and metallic. I was confused as to why, after looking at the recipe she used, until I discovered she had been using cast iron to cook.

After she switched cookware, the same recipe was fine the next time she prepared it.
Posted by TigerstuckinMS
Member since Nov 2005
33687 posts
Posted on 9/12/18 at 3:36 pm to
Time is important with acidic food and cast iron. The longer you cook acidic stuff in it, the greater the chance you're going to leech iron out of the pot and get metallic flavors.

Quick searing of tomatoes? No problem. 4 hour spaghetti sauce? problem.
Posted by alajones
Huntsvegas
Member since Oct 2005
34475 posts
Posted on 9/12/18 at 3:48 pm to
I would think that people cooked tomatoes in cast iron a lot back in the day.

I’ve found that without a good season, anything will leach the metal taste.
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