Alum Powder

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  1. $2.99/lb
  2. $2.90/lb
  3. $1.99/lb (bulk - not individually packaged)
See our bulk discounts

Alum powder is a crystalline powder that is most commonly used in pickling; it keeps pickles firm and crispy.


Alum powder is often used to firm and crispen pickles by letting them soak in a sealed brine solution of water, vinegar, salt, spices, and alum powder for several weeks. Cucumbers should be pickled at the peak of freshness because they will become soft after a few days. Use up to 1/4 teaspoon of alum per pint of solution.

Alum's tissue-shrinking properties gave it a starring role in multiple episodes of the cartoon Looney Tunes in which alum was shown to comically shrink the characters' heads and pucker up lips.

Customer Reviews

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“Thanks for the quick delivery.Order on Tuesday Delivery on Thursday! Can't beat that. I'll spread the word.
Thanks Again”

, Blue Creek, OH May 1, 2010

“I placed my order Tuesday evening and received it Wednesday morning! I can't believe how fast i got it! I also got a nice thank you bag of delicious cookies I love the site and the selection and will most definitely recommend and order again!”

, New York, NY April 29, 2010

“Before I found Nuts Online, I could only find alum in one store. Sometimes they didn't have it. I am very grateful that I am now able to get it also in large quanities.I use the Alum in my homemade pickles. I also make homemade cookies. I saw some additives that I will try in my cookies. Take a look @ I am very glad that I found you NUTS ONLINE

Thank You”

, Pittsburg, Ca March 4, 2010

“Thank you for the speedy delivery & fantastic product! You are the best!!!”

, Fontana, CA February 1, 2010

“Thanks, you provided fast service for hard to find spice at a low price.”

, sartell, mn January 25, 2010

“Great stuff, thanks again for the speedy delivery”

, y January 21, 2010

“Outstanding service! Love the packaging with resealable bags too! ”

January 12, 2010

“Even though it is difficult to understand the tone of speech over the internet, NutsOnline is warm, friendly, and offers great products and service. I will always use them. Shipping was speedy, too, which is a great bonus.

, Tampa January 8, 2010

“ I rcvd the order promptly and appreciate the professionalism and courtesy. Believe it or not, I'll be using the product in a "deer hide tanning process" after the weather warms a bit. ”

, Jefferson City, Mo. January 7, 2010

“My order much faster than I expected.

, Stafford, Va January 6, 2010

“I ordered 3 lbs. of alum powder for tanning. had the best price I could find, and my order came so fast! I came home to find my package opened by my daughter, who was so intrigued by the messages on the box, and said she just couldn't help herself, lol! I will definitely order other items, and am telling all my friends!”

, Sawyer, MN July 11, 2014


Aluminum sulfate

Packaged in the same facility as peanuts, tree nuts, wheat, soy, and milk products.


Store at room temperature for up to 1 year.

Country of Origin: United States

ID: 7386

From our family to yours, since 1929

Our beloved grandfather, Poppy Sol, started this business in an open-air market. Three generations later, we’re still bringing smiles to our customers' faces.

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