The Fresh Loaf

News & Information for Amateur Bakers and Artisan Bread Enthusiasts

Did the KitchenAid dough hook ruin my bread dough?

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rissa.85's picture
rissa.85

Did the KitchenAid dough hook ruin my bread dough?

I just made bread dough in the KitchenAid stand mixer and when i was finished i noticed the gray color was rubbing off the dough hook into the dough.  Is it safe to eat or should I throw it away?

yy's picture
yy

Are you saying there's a dark-ish "finish" on the dough hook that is rubbing off into the dough? The same thing happened to a metal kitchenaid dough hook of mine. I contacted kitchenaid customer service, described the problem, and they sent me a new one after conceding that this was not normal. I think you should throw the dough away. It sucks, but who knows what health effects that grayish stuff might have.

 

rissa.85's picture
rissa.85

Yeah i think it's probly the finish.  It got washed in the dishwasher which I now realize is the wrong thing to do.  I talked to someone from KitchenAid and they're sending me a new one but in the meantime I have this bread dough I really don't want to throw away, just was wondering if anybody knew if the stuff is toxic.  But yeah guess I should toss it to be safe. 

quickquiche's picture
quickquiche

When in doubt, toss it out.

simon3030's picture
simon3030

Hi, the dough hooks and other beaters are made from cast aluminium; the problem with aluminium is that dishwasher detergents, which are caustic (alkali), react with the aluminium to form the grey oxide that rubs off the surface - once you have dishwashed them, they are irretreivable - so as has been said, toss it out!

thihal123's picture
thihal123

YUCK! Didn't realise it was made of aluminium. That stuff is reactive! I mean, I don't know many doughs that are that acidic, but what about sourdough? Wouldn't that be acidic enough to react with the aluminium dough hook? Anyhow, I don't use a KitchenAid for breads (though I do have a professional series one).

CelesteU's picture
CelesteU

Why on earth would you THROW OUT a perfectly fine dough hook just because it's been through the dishwasher?  Sure, the shiny alumnium surface has oxidized, but it isn't going to harm you.  Dish-washing aluminum can cause pitting, which is the reason manufacturers suggest hand-washing.  I run my KA beater, whip, and dough hook through the dishwasher once a month or so; after 5 years, I haven't seen any pitting thus far.

Practically every commercial bakery and restaurant in the free world uses aluminum sheet pans and/or aluminum cookware (like AllClad), which are certainly washed in detergent (either by hand or mechanically).  Yes, a light film of oxidation will build up after prolonged contact with detergent & water, but scrubbing & drying will take care of it.

Sheesh, not every substance in the world is toxic.  The negative environmental impact of mining bauxite for aluminum/refining it/manufacturing & shipping are FAR greater than any impact from oxidized aluminum, so KEEP what you have and don't needlessly buy new things.

 

yy's picture
yy

Sure, the shiny alumnium surface has oxidized, but it isn't going to harm you. . . .Sheesh, not every substance in the world is toxic.  

No, but some substances are.  I would perhaps consult a higher power backed by science before making a judgement on this (maybe Materials Safety Data Sheets or http://toxnet.nlm.nih.gov/). In the absence of more knowledge, I would err on the safer side and assume that it is not safe for human ingestion.

The negative environmental impact of mining bauxite for aluminum/refining it/manufacturing & shipping are FAR greater than any impact from oxidized aluminum, so KEEP what you have and don't needlessly buy new things.

Nobody is trying to be wasteful here, only cautious.

Practically every commercial bakery and restaurant in the free world uses aluminum sheet pans and/or aluminum cookware (like AllClad), which are certainly washed in detergent (either by hand or mechanically).  Yes, a light film of oxidation will build up after prolonged contact with detergent & water, but scrubbing & drying will take care of it.

I personally have used plenty of aluminum sheet pans that develop a discolored finish after a period of use, as you have described. They remain perfectly good and functional. However, in the original poster's case, we're not talking about a cosmetic color change. What the original poster is talking about is different - I have experienced the same thing firsthand from a KA dough hook, and it certainly did not look like an old sheet pan. We're talking about a substance that is rubbing off into food.

I'm not the compulsive, hand-sanitizer-happy, "if you don't eat organic you will get cancer" type by any means. I even eat smoked meat products, walk through TSA body scanners, and microwave food covered by cling film occasionally (GASP!). However, these are my own actions, undertaken at my own risk, and I would not advise others to make the same decisions just because I have accepted them as the right path for me.

AnnieT's picture
AnnieT

Surely people were suggesting tossing the dough, NOT the dough hook? That's the way I read it, A.

LindyD's picture
LindyD
Mini Oven's picture
Mini Oven

steel wool pad... the kind with soap, grab a big rag for my lap, some thick rubber gloves and a shallow pan of water.  Then put on a good video or download a movie and polish the dough hook until I can see myself in it.  In the beginning, rub a lot and as it shows a shine, try to ease up on the pressure to polish. Dip ever so often into the water to wash off the foam and see how your efforts are coming along.  Rinse in clear hot water and dry.  

This can also be done with aluminum knife handles, garlic presses and other aluminum tools that found their way accidentally into the dishwasher.  It's the salts, heat and duration under water that dulls the surface.  If left in a water filled mixer bowl overnight, the hook might show the same reaction just not as aggressive.

Lumber lady's picture
Lumber lady

So I finish my baking and rinse out my equipment then run them through the dishwasher. The beater, bread hook and whisk come out tarnished and grey chalky marks are all over everything they touch. Does Kitchenaid not make items that can go in their own dishwashers? Do they really expect us to wash things by hand? Why should I have to buy new parts because I used my Kitchenaid dishwasher. Their customer product development department should get on this issue before I have to chose between my mixer and my dishwasher. 

Crescentroll's picture
Crescentroll

Celesteu commented that after five yrs she had never had this problem. Well I had never had the problem for 18 years, got a new KA mixer to replace it, and now I have a ruined batch of crescent roll dough. The stainless steel mixing bowl, washed according to manual in KA dishwasher,deposited gray streaks all through dough.  I had used my old dough hook--whited-coated.  KA quality is NOT what it used to be.  That's the problem.