How do you wash a granite mortar and pestle?

A few years ago I got a Gorilla brand granite mortar and pestle. I seasoned it as directed and got quite a bit of use out of it, then I stopped cooking for a while and it got kind of…well, gross. It’s possible that I spilled something on it, but portions of the bowl and exterior are a darker color now. I guess I’m afraid with the relatively porous granite that it’s full of rancid garlic effluvium. Does anyone know how to clean this thing? Should I just pitch it?

Before: imgur.com/a/lWyQNGH

After: See Google album link (I tried again to use imgur and my phone crashed 😆)

Alt share because imgur is being a pain: photos.app.goo.gl/LzXZoxnhdEvmQHug7

Edit: Edited to include links to “before” images. Edit #2: Added a backup Google album Edit #3: Added after images to Google album

knightly, (edited )
@knightly@pawb.social avatar

Grinding uncooked white rice is the vintage method for cleaning granite mortar and pestles, but it isn’t terribly effective at getting them clean. These days, that method is mostly for “seasoning”, preparing a mortar for use by grinding off any leftover bits of unpolished stone so that they don’t get incorporated into any of the food you want to grind.

Since we stopped putting lye in soap, the modern cleaning method is hand-washing with warm water, a mild detergent, and a stiff-bristled brush before towel-drying thoroughly. Granite and marble actually have a relatively low porosity, so washing the soap out with water isn’t as much of a challenge as it would be with highly porous volcanic stones like pumice, but it’s still best to use an unscented soap so there’s no fragrance to be left behind.

knightly,
@knightly@pawb.social avatar

If your problem is specifically a rancid garlic smell you want to neutralize, then try the following:

Use 1/4 cup of baking soda and 5 drops of dish soap, then add just enough water to make a paste. Grind with the pestle and be sure to coat the sides completely. Then add 1/2 cup of vinegar and stir until the sides are coated in foam. Let sit about 5 minutes, then rinse with hot water and dry thoroughly.

sgibson5150, (edited )

takes notes ty ty

Edit: I learned how to escape in markdown or whatever this system is. 👍🏼

knightly,
@knightly@pawb.social avatar

No problem!

Did you have any luck getting that mortar and pestle cleaned?

sgibson5150,

Not yet. What a lazy butt I am. I’ll probably try it tomorrow. I will add some before & after pictures.

sgibson5150,

Added links to “before” images. Will update after it dries to include “after”.

I’m a day late. Sorry about that.

knightly,
@knightly@pawb.social avatar

No worries! Looks like you really had your work cut out for you there!

sgibson5150,

The m&p was totally dry this morning so I took “after” photos and added them to the Google album. Still some darker spots but better than it was before.

knightly,
@knightly@pawb.social avatar

Looks pretty usable to me!

sgibson5150,

My sniffer isn’t 100% today but it seems not to be malodorous after the bath. I may try seasoning it tonight. Thanks again for the advice! ✌️

sgibson5150,

Yes, it was pretty gross. It all started when we went through a phase where all the fresh garlic we were buying had mold in it. After a few weeks we gave up and went back to powdered garlic, so our m&p sat around and occasionally got various soups slopped on it. That last part miiight be my fault.

Dg2445,

You might try grinding salt or dry white rice in it. The abrasive should help.

sgibson5150,

Ah that’s probably a good idea. I’ll try that tonight. Maybe rice would also soak up some of whatever is in the granite.

StillPaisleyCat,
@StillPaisleyCat@startrek.website avatar

We may be heathens but we always just hand washed ours with a good grease cutting liquid detergent to get the rancid oils and spices out.

sgibson5150,

I sort of feel like that’s what it needs, but I worry that there’s no way to get all the soap back out.

altima_neo,
@altima_neo@lemmy.zip avatar

pop her in the oven

sgibson5150,

No way! Learned my lesson with a pizza stone. It was like Aslan came back to life. 😆

No, my wife didn’t laugh at that either.

StillPaisleyCat,
@StillPaisleyCat@startrek.website avatar

Baking it won’t eliminate the oils or old spices, more would give you your cast iron frying pan effect.

We use a super neutral dish detergent that washes or at least soaks out in rinse water. Not one of the national name brands.

Even were this cast iron, sometimes you get to the point that you have to clean and restart to build the finish.

But others may feel differently.

sgibson5150,

I’m sorry but what does cast iron have to do with a mortar and pestle? Am I your AI hallucination? (If you are human or English is not your first language, please disregard.)

TheOneCurly,

You misread. They mean a thicker layer of polymerized oils building up would produce a “cast iron pan” effect on the granite. A layer reminiscent of what people try to achieve on well seasoned cast iron.

sgibson5150,

I mean, maybe. That seems unlikely with granite. It’s like a big, dense sponge.

StillPaisleyCat,
@StillPaisleyCat@startrek.website avatar

I was thinking through what would happen should the OP follow the advice by another user which recommended baking the mortar and pestle.

Since it has a heavy film of fats,my thought is that baking at a low temp would create a finish similar to that on seasoned cast iron. I’m not thinking that would be a plus but others might think otherwise.

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