Friends who've been to Five Guys all say it's good, but personally, I think its main advantage is…read morethe portion size; the taste is only so-so in the US. It's far inferior to the Boston local brand Tasty Burger.
Cheeseburger: Huge, I felt full just after finishing it... The patty was freshly grilled, and the juices and fat were passable, but not particularly memorable; the bun was a bit soggy, like it was steamed (though definitely not). Free toppings are a special feature, especially with 15 kinds--very generous! Many guides recommend "All the way," but that might not be suitable. I only added grilled onions, grilled mushrooms, tomato, and steak sauce, and I already felt it was too much. It lowered the patty's temperature, interfered with the grilling aroma, caused the flavors to mix, and added unnecessary calories. I suggest adding about two toppings according to your own taste. Sometimes less is more!
Little Fries: It's hard to imagine that a little fries was more than twice the size of a large fries at McDonald's in China; it completely overwhelmed the burger in the paper bag. Later, I checked Red Notes (a Chinese social media platform) and found out that this was a brand specialty--no matter how much you ordered, they would give you an extra bunch of fries. The fries were cut very thick, fried with the skin on, and made with peanut oil, so the aroma was especially strong, and the texture was crispy on the outside and soft on the inside. But all of this was just too sinful...
Regular Soda: I chose the strawberry lemonade, which felt like it had a lot of artificial coloring and was also very sweet.