Tremble Shortcake is a food item in Sword Art Online offered in a secluded unnamed NPC restaurant in the northeast corner of Urbus on the Second Floor. The sponge cake has a radius of 18 centimeters and a height of 8 centimeters, and it is made of the Trembling Cow's milk and over a liter of cream.
The inside is arranged in four layers: sponge, strawberry-flavored cream, sponge, and strawberry-flavored cream. A bright red strawberry sits on the top of it.
The cake is first recommended to Kirito by Argo, and is considered extremely delicious. Due to its taste, it is very expensive and the price can exceeds the price of the three main dishes of Kirito and Asuna's dinner combined.
It also provides fifteen minutes of a the Luck buff as a side effect.