Starbucks is running out of a key ingredient -- and customers are freaking out

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You've Been Drinking Starbucks the Wrong Way

Starbucks across the country are running out of coconut milk, thanks to the runaway success of two new beverages.

On July 12, Starbucks launched the iced coconut milk mocha macchiato, its first-ever beverage with a coconut milk base.

The chain debuted the limited-time offering to highlight its coconut milk, which the company launched in 2015. Customers had already been utilizing the non-dairy option this summer to create "secret menu" beverages, such as the hugely-popular pink drink.

Now, it seems that coconut milk may have become a little too popular at the coffee chain.

"Are you out of coconut milk, too?" Reddit user barista 1738 asked in the Starbucks subreddit on Tuesday. "We have been out of coconut milk for the past few days and people are pissssed."

Looking at social media reveals that the barista is far from alone.

Starbucks' Twitter has been flooded with complaints of locations lacking in coconut milk.

See photos of the Starbucks secret purple drink:

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Starbucks' secret Purple Drink
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Starbucks' secret Purple Drink
I just bought into the hype. This is the secret purple drink. And it's delicious. And also not a secretπŸ’œ #oops #sogood #purpledrink #itspurple
The Starbucks Purp πŸ‡ Its not all that great but you know I had to try it. Lol #Starbucks #PurpleDrink
πŸ’œ#purpledrink πŸ’œ What do I think?? It's... pretty!!! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ πŸ“: your nearest @starbucks 🍹: passion fruit iced tea, vanilla soy milk, blackberries ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ . . . #starbucks #foodporn #eeeeeats #eatfamous #tryitordiet #YouGottaEatThis #myFab5 #hangrydiary #WeGotFC #devourpower #feedyoursoull #adventuresOfAPE #cheatmeal #huffposttaste #unlokt #buzzfeast #spoonfeed #forkyeah #vegasdining #zagat #eater #bestfoodlasvegas #foodbeast #lovefood #starvingfoodseeker #foodpornshare #happytummy_702
Cheers to #HumpDay! πŸ˜ŽπŸ€“πŸ˜ƒπŸ˜‹ . . Got my #Starbucks #PurpleDrink in my hand!!! . . Thanks for the Sweet Treat, Baby! . . β€’β€’β€’ #SecretMenu #LALife #CaliLife #LifeOfAMom #MommyLife #Dranks #Summer #LA #LAMom #CaliMom #Yummy #BreakTime #Purple #LAEats #GoodEats #Foodie
So apparently there is a New @starbucks #Purpledrink that's on the Secret Menu: Passion Iced Tea, Soy Milk, Vanilla and Blackberries! Thanks to @shadesofkassie for looking out for me, she knows how much I love the #pinkdrink 😍😍😍
Uh....it's a hot day so one drink doesn't do it 🌞 #notsponsored #purpledrink
I wish @Starbucks had a secret dating menu. I'll settle for this yummy Passion Fruit Tea with soy milk and blackberries. πŸ˜‹
μ§€μ›Œμ Έμ„œ λ‹€μ‹œμ˜¬λ¦Ό γ… γ… γ…  πŸ‡πŸ‡ #Purpledrink πŸ‘Ύ ν•‘ν¬λ“œλ§ν¬λ³΄λ‹€ λ§›μž‡λ„€μœ πŸ˜‹ Passion iced tea+soymilk+vanila syrup+blackberries . . #starbucks #μŠ€νƒ€λ²…μŠ€ #purpledrinks #πŸ’œ #instadaily#instagood#instatea#일상#μŠ€λ²… #drink #cali #california #la #dtla #ktown #calilife #μ—˜μ—μ΄ #μ—˜μ—μ΄μΌμƒ #passionicedtea #soymilk #vanilasyrup #blackberries #instastarbucks
Thankful for such a supportive group of partners, managers, and customers I get to create memories with each day! #tobeapartner #hardworkpaysoff #purpledrink #secretmenu #starbucks #partnerofthequarter #baristalife
#Passionfruit #icetea with #coconutmilk and #blackberries. #starbucks #blackberries #purpledrink #dinner try this new secret menu item πŸ˜‹ @regene13
It looks so pretty and tastes as good! #purpledrink
Goodbye #pinkdrink and hello #purpledrink. @starbucks is back at it with the newest addition to the secret menu. Passion fruit iced tea, soy milk, vanilla syrup, and blackberries. Has anyone had a chance to try it? πŸ’œ
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The problem seems to be impacting locations across the US.

Other customers are taking to Facebook to complain.

"Starbucks why is there no coconut milk in upper Manhattan?" reads one such comment. "I went to 3 stores they all said none until at least the weekend."

Starbucks did not respond to Business Insiders' request for comment.

On one hand, it's good news for Starbucks that customers are responding positively to new beverages made with coconut milk, both in the form of iced coconut milk mocha macchiato and the pink drink, which is made with strawberry açaí refresher and coconut milk.

"Coconut milk is one of those things that our customers were asking for," Starbucks' coffee education specialist Mackenzie Karr told Business Insider prior to the launch of the iced coconut milk mocha macchiato. "When we launched last year it was hugely successful. So, the next step seemed — let's build a beverage around it."

However, when customer demand exceeds supply, it can create some serious problems for the company.

In May, Starbucks told Business Insider that locations were expected to increase their coconut milk orders prior to the launch of the iced coconut milk mocha macchiato. Clearly, some locations underestimated exactly how many customers would be jumping on the coconut milk bandwagon this summer, and are now coming up short — and, in the process, enraging customers attempting to try a new, limited-time offering or flaunt a pink drink on Instagram.

RELATED: See different coffee and espresso drinks,explained:

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Coffee and espresso drinks explained
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Coffee and espresso drinks explained

A latte is espresso and steamed milk with a small amount of milk foam on top.

(Photo by Derek Davis/Portland Press Herald via Getty Images)

A cappuccino should be equal parts espresso, steamed milk, and milk foam. 

(Photo by Florian Gaertner/Photothek via Getty Images)

dry cappuccino features less of the traditional steamed milk and more milk foam in its place.

(Photo by Etienne Voss via Getty Images)

cafe au lait is traditional black coffee mixed with warmed milk.

(Photo by Waring Abbott/Getty Images)

Espresso is specially brewed coffee, created with finely ground coffee beans brewed under pressure with nearly-boiling water. 

(Photo by Jeremy Piper/Bloomberg via Getty Images)

macchiato, traditionally, is a 'stained' espresso -- espresso with just a dot of milk.

(Photo by Nigel Noyes via Getty Images)

An Americano is espresso mixed with hot water. 

(Photo by Ben Monk via Getty Images)

cortado is espresso that is 'cut' with an equal amount of milk. 

(Photo by Anthony Collins via Getty Images)

red eye is for the severely under-caffeinated -- espresso shots mixed in with a regular black coffee

(Photo by Dima Sobko via Shutterstock)

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