Today, ns am walking to take a comprehensive look in ~ if you should/shouldn’t it is in microwaving Starbucks cups.

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We will also present useful, yet crucial information, together it relates come the different cups the are easily accessible at the renowned coffee chain.

With the said, allows us jump right right into it.

Are Starbucks cups Microwavable? (Paper, Plastic or Ceramic Mugs)

Before we answer the question, we very first need to recognize the kind of Starbucks cup you space planning top top microwaving.

We will certainly look at:

PaperPlastic/Plastic ReusableMugs

Let’s take it a an ext detailed watch at each one below.

Can you Microwave Starbucks document Cups?

To start things off, let us see what Starbucks needs to say around putting cups in the microwave.

The photo above put a lot into perspective, together the cup indigenous the coffee chain clearly states, Do not microwave.

A fast search that the Starbucks website, reflects no info on the microwaving of record cups.

However, a previous Starbucks supervisor, Santita Ngo, offered some understanding as who posed the inquiry on the renowned answer site, Quora.


Santita highlights a pair important points. We will look at them in information below:.

Can’t stand up to the extreme HeatToxic LeachingMay capture Fire

They Can’t withstand the too much Heat

Microwaving coffee in Starbucks paper cups, can lead come the cup having structural failure.

 Eco products, manufactures of your own record cups, defines this concept in good detail. Castle state:

 “Paper hot cups and soup cups are designed to hold hot drinks and food, but not to withstand the excessive heat the a microwave. In ~ best, the glue in ~ the seam deserve to loosen and also the cup will begin to leak.”

Alternatively, if the adhesive melts, your cup might start leaking native the sides.

They’re prone to toxic Leaching

The coating found inside the Starbucks file cups is a mix the wax and also plastic.

According to adjust plastic for good, they describe that the plastic coating is do of Polyethylene, a plastic the is recognized for its warm resistance and durability.

While the is good at warm resistance, a 2011 study published in environmental Health Perspectives highlighted that there is one acceleration of plastic leaching into your beverage, as soon as the plastic is exposed to stresses such together microwave radiation and also boiling liquids.

There is a possibility that spend a beverage in a Starbucks document cup the was heated in the microwave, might result in the introduction of particular toxins into your body.

The results of this toxins on your body can be seen in the long-term and also this is all the factor why they must be avoided.

They’re a Fire Risk

Finally, over there is possibility that placing the Starbucks record cup in the microwave, could reason it to catch fire.

Manufacturer of record cups, Eco Products, has actually a warning on its website.

Paper cups, “at worst, the cups have the right to even catch on fire. This is true for all document cups. … we recommend microwaving in glass or ceramic containers labeled as microwave safe,”

A search on Twitter, uncovered tons of tweets of civilization finding the end the hard way that Starbucks paper cups can catch fire.


Final thoughts on Microwaving file Cups With all the proof presented above, girlfriend definitely should not microwave Starbucks file cups.

While i am certain thousands of human being do this daily, the dangers are as well much.

If you execute want come reheat her coffee, climate it is finest to do so in a microwave for sure cup.

Can you Microwave Starbucks Plastic/Reusable Plastic Cups?

In this section, we will certainly look in ~ if you should be microwaving Starbucks plastic cups.

PlasticPlastic reusable


Plastic cup are usually used because that cold drinks, such as Frappuccino, Refreshers, etc.

But you will certainly not be able to microwave those.

Plastic Reusable

Over the past couple of years, Starbucks has introduced reusable and also recyclable plastic cups.

These plastic cup which countless use for your coffee, space made frompolypropylene, a plastic that is considered to be safe for use in the microwave.

So does that typical Starbucks reusable cups are microwave safe?

If girlfriend look at the bottom that the cup or the packaging, the will clearly state that cups should no be microwaved.

You could be wondering, why? due to the fact that polypropylene is a microwave-safe plastic.

INEOS, a top chemical agency explains that there are a range of components that renders these species of cup unsuitable for the microwave.

The factors that may significantly influence the suitability of polypropylene containers provided for reheating foods items are:

Chemical resistance based upon the composition of the contentsMaximum exposure to the container (time and also surface contact)Thickness the the containerResidual stresses imposed during the switch process

Can you Microwave Starbucks Mugs?

We know countless of you additionally want to know if Starbucks mugs have the right to be microwaved?

The answer to that concerns depends on differing factors:

What form of mug will certainly be going right into the microwave?Is it decorated?Is it double walled?

We go into an ext details below, looking in ~ the different types of mugs.

Ceramic mugsDouble wall surface mugs


Regular ceramic mugs, without the dual walls have to be OK come be used in the microwave, just as long the as there room no foil or metallic decorations ~ above them.

To it is in sure, friend could always look at the bottom of the mug to watch if you see the “microwave safe” label.

Doubled wall surface Mugs

While the twin wall mugs are used for drinking warm coffee, reheating castle in the microwave is a recipe because that disaster.

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The BarbecueTricks Youtube page gives a short, yet detailed explanation as to why the is no a great idea come reheat Starbucks dual wall mugs in the microwave.