To help spread the word about Duetto, our public relations team sent out a news release about the new product. It’s standard procedure really, but with each release they’re also sending an official Duetto coffee mug. Only it’s not an ordinary coffee mug.
The mug is printed with the Duetto logo on one side and a cow on the other, but when you pour hot liquid into it, the cow changes colors from a typical black and white Holstein cow into a red and white Duetto Swirly Cow. As your coffee or tea cools off, the old cow fades back into existence. Check out the video below for a demonstration.
The transformation happens thanks to the use of a temperature sensitive, thermochromatic ink called leucodye. Thermochromatic inks are also used in mood rings and stick-on aquarium thermometers, but those applications use a more accurate liquid crystal ink.
We happened to put three of these magic mugs aside and we’re giving them away to three Ice Cream Journal readers chosen at random (readers were chosen from those who left comments in the past month or so). We’re thinking about making a bunch more and adding them to the Turkey Hill store. We’ll keep you posted if that happens.

If you’ve got a technical question about the ice cream making process or some other inquiry about the nuances of America’s favorite treat, chances are Ernie has the answer. He might not be able to answer all questions, but he’ll try his best and some may be featured on the Ice Cream Journal.
that is way cool
Awesome product!! You guys should definitely make them for sell, I would buy a couple for sure!
Glad you both like them. We’ll definitely let you know (via a post on the blog) if they ever go on sale.
I’ll take one too! Those things are really cool.
What a great idea! I love the cow!! Keep up the good work. Glad your products are now in the Pittsburgh, PA area.
It’s good to be in Pittsburgh! This year, our presence expanded considerably with our deal with Giant-Eagle. Look for us there!
These mugs are fantastic – I totally want one!
I got mine in the mail yesterday and it is the neatest thing ever!!! I love it!!!
Glad you like it Christina and we’re glad it arrived in one piece!
(For those who don’t know, we gave away three mugs for our monthly prize to commenters chosen at random and Christina was one of the winners.)
Cool mugs. So, does the cow have a name?
Great idea! Would like to try it.
The mug is so cute. I would love to
have one for my work station. I wish
they would make the duetto in the root
beer float flavor…..I can NEVER find
it. It’s great!
Pat Clark
7407 Fenwood Court
Manassas, VA. 20109
Love this mug! Am hooked on the raspberry duetto.
Glad you guys like the Duetto. We’re exploring new Duetto flavors as we speak. For now they’re a secret (our development team is sensitive like that), but we’ll tell you all about them when we can…which hopefully will be soon!
have something similiar.the kids love watching it change colors
I have been eating Turkey Hill Ice Cream for many years. When I lived out of state I couldn’t wait to get home to have some. Just saw the cow mug. It is terric idea, just like your ice cream and drinks.
There are two of us. Seniors. We buy a Turkey Hill 56 oz. about every 2 weeks. One time it’s a flavor I like, the next it’s one that my wife of 40 years likes. This time it’s my turn. I’m going to try Duetto. I love to eat your ice cream with a cup of black coffee, usually Hazelnut and with Moose Tracks. The mug would go great. Thanks for the opportunity.
Those mugs are really cool.
Moooooo cow cups. I would love to have one of these. Actually, two of them. I know my grandson would love it. He could eat all his Turkey Hill Ice Cream in it and then run under hot water and watch the cow change. I too love Turkey Hill Ice Cream. My favorite is Vanilla Bean but I will definately be looking for the Root Beer Float flavor next time I go shopping. Please, please, make more of the cow cups available.
Thank you for making such a delicious ice cream!!
That is the coolest mug ever!
duetto has to be the best invention to icecream ,just thinking of the soft serve vanilla and my favorites lemon /or cherry venice ice makes my mouth water ,and now a”cow cup”to top it off
hope to see new flavors in store soon :my vote would be for Blueberry venice ice with my vanilla soft serve
The Duetto line is great! Very refreshing. I especially like the mango flavor. Since I watch portion control, the dilemma comes when I need to make a choice – duetto or your fabulous flavors of Turkey Hill ice cream. Oh, if I could only eat Turkey Hill Duetto and ice cream all day long…
Thanks for the great Turkey Hill quality products!
P.S. The mugs are great. My company used them in the past as promotions and they were very well received. The Duetto cow is the perfect icon for the color-changing mugs. Good job!
That’s a cool mug! I know my kids would love to play with that all the time!!! :]
As you are not out in Denver yet.. I have to go to PA. and N.J. frequently for visits. Let me know if cups go on sale.. friends out here think I make this stuff up.
These look like a real collectors item. Hope I can find me one.
A great idea!! Grandchildren certainly would be fasinated.
What a cool idea! Love to have one.
Please make these cups available in your store. Let me share with you true this story. My wife has a collection of Holstein cows and this is why.
Before my wife’s mother passed away, she told each of her siblings that she would never leave them, and this is how!
From the time they were in school she reminded each of her children that once she passed on in to heaven, she would come back to them in the form of a black and white (Holstein) cow. That they should always check each pasture they pass to see if she is lying under a shade tree. They should stop and stare for a moment, If it is MOM, she would wink at them to remind each of them that she is with them in spirit and continues to love each of them.
I never met my mother-in-law but I still stop just to see if per chance she might know who I am and know how much I love her daughter. I hope she knows that all of her grandchildren continue the beloved tradition. Thank you for another reminder!
The cup is really neat! I really liked it! I hope i can find you like it!
I love these mugs. I can’t wait till you make them available for the general population!
The mugs are cool but should be way bigger!!!
Why can’t I vote for several inclusions. I finally decided on walnuts, but I like pecans, cherries, and Carmel in ice cream. Maybe you could make a new flavor with all those inclusions.
I want one!! Are they available yet??
I love it also the mug and of course the ice cream but that’s a givenI know I sound like a broken record but if it’s cute and good I say repeat it!!
Love the mug, am a coffeeholic, and an ice creamholic, and of course a chocoholic. If you like chocolate try the Death By Chocolate flavor, it isn’t brown, it is so chocolaty it is black, YUMMO
How ’bout a flavor with whoopie pie in it!
I love the new Duetto mug, its cool.
I am a big fan of Turkey Hill Products.
I just tried your Duetto(mango). We loved it I will be trying the Lemon this week.
The mug is real clever…..
Thank-you also for senging your calender every year.
I do wish I could buy my favorite(Rum Raisin) all year round….
Anne Devlin
The mug is clever and would be a great addition to my mug collection! Keep making your great products and thanks for caring enough to ask for customer input.
Turkey Hill is our favorite, we were so happy when it became available in the Adirondacks of NY. Hope we can find those mugs soon.
The mugs are really cool. I would definetly buy one if they ever go on sale. I realy like the cow. Great idea!
I really love the mugs would defintely buy if go on sale Great idea
i love ice cream, i scream for ice cream. on my lips. to my hips, i love ice cream
Cute mugs. can they fit in the holder in my car?
That is very cool!! I want one, please sell them so that in case I don’t win that I can purchase one!! I love the Duets, the best one is the Mango!!! Keep ‘em coming we need more flavors in this swirly confection!!
These are really neat. Hope you will retail.
Cool cup……..I think you should add a Chocolate Duetto Flavor. Either Chocolate Ice Cream with Fruit Water Ice or Chocolate Water Ice with the Vanilla Ice Cream. Yum!
Love the mugs! Duetto is my favorite frozen dessert–love the cherry and the lemon! I really hope that you add some more flavors and that you sell the mugs!
These mugs are the best! Would love to have one!