![20180525111345_0_20180523mac_600](https://asiatrend.org/wp-content/uploads/2018/05/20180525111345_0_20180523mac_600.jpg)
This summer, McDonald’s Japan is rolling out a special sweet potato shake for a limited time. It’s purple!
![](https://asiatrend.org/wp-content/uploads/2018/05/20180525111345_1_d2_480x_600.png)
The flavor is “murasaki imo” (紫いも), which means “purple sweet potato” in English. Note that this is not a yam! It is very much a fall food. According to website Entabe, the purple shake will go on sale until September 10 in Japan.
![](https://asiatrend.org/wp-content/uploads/2018/05/20180525111345_2_2_480x_600.png)
Picture source: entable.jp