Tremble Shortcake

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 Asuna by Argo, and is considered extremely delicious. Due to its taste, it is very expensive and the price can exceed the price of the three main dishes of Kirito and Asuna's dinner combined.

It also provides fifteen minutes of the "Luck" buff as a side effect.

Trivia

 * The "short" in "Shortcake" doesn't actually refer to the size of the cake. "Shortcake" originally meant a cake that is crispy when the teeth touches it, but the word loses its meaning in Japanese, as Japanese make such cakes out of a soft spongy base, while the original American cakes were made out of a foundation that was similar to biscuits. The Aincrad's version of the cake uses a spongy base as well.
 * Tremble most likely refers to the Trembling Cow, which produces the milk used for the cake.