The outlet on Glebe Point Road gave hungry guests six different choices at its Fries With That pop-up: chipotle cheese sauce; gravy; peri peri cheese sauce; pesto mayo and parmesan; curry; and caesar sauce, bacon and parmesan.
The fast food chain has then been asking the general public to vote for which ones sound the most tempting to eat, with the winner potentially making it onto the menu.
Visitors were limited to one serving per person per day.
Earlier this year McDonald's teamed up with Hasbro for a Monopoly experience.
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