It turns out that not all burgers are created equal — not even if they are from the same brand.

Shake Shack opened its ninth outlet at Junction 8 in Bishan on Thursday (Oct 14), but a fan of the burger chain was left underwhelmed.

Stomper C said she visited the store at around 4.30pm and was surprised that there was no queue.

C had previously shared photos of long lines at Don Don Donki's newly-opened Northpoint City outlet and for Hokkaido Baked Cheese Tarts at Causeway Point.

She told Stomp: "I like looking at queues, taking pictures of queues and sometimes joining queues, so I decided to check out the buzz at Shake Shack's latest outlet.

"To my surprise, there was no queue. Well, good for me.

"The first floor was fully seated, while the second storey was quite empty. In between is a tedious flight of stairs to help you burn calories, haha."

The Stomper said: "I ordered my usual favourite of a ShackBurger for $9.70. The burger was not bad but nothing to shout about. It was also on the drier side and not juicy or as good as I remember it to be."

C, who has visited Shake Shack's flagship store at Jewel Changi Airport multiple times, finds that the quality and taste of food there is still the best.