The Alley in Malaysia has launched the ultimate bubble tea upsize, a five-litre bottle of bubble tea, from Oct. 4, 2019.

Along with that, the bubble tea chain also started running a five-litre challenge where participants stand a chance to win free five-litre bottles of bubble tea.

Here's how it works.

5-litre bubble tea challenge

One simply has to head to any one of The Alley outlets in Malaysia and complete a tongue twister in eight seconds.

After completing the tongue twister challenge, one can purchase five litres of bubble tea at a 12 per cent discount.

The five-litre bottle is selling at RM79 (S$26) and will cost about RM69.50 (S$23) after discount.

Here's a video of a staff who tried the tongue twister challenge but only finished reciting it in 12 seconds.

Not so easy.

True bubble tea addicts won't stop at the first five litres of bubble tea.

By posting a photo of yourself with the five-litre beverage on social media, one can stand a chance to win another five litres of bubble tea.

Winners will be announced via The Alley Malaysia Facebook.

Here's the full instruction:

https://www.instagram.com/p/B3JUPFcHRe0/

If you are heading to Malaysia soon, you can find the nearest The Alley outlet to try the challenge here.

Top photo collage from The Alley Malaysia/Facebook