Tremble Shortcake

Tremble Shortcake (トレンブル・ショートケーキ) is a food item in Sword Art Online that is offered in a secluded, unnamed Non-Player Character (NPC) restaurant in the northeast corner of Urbus on the 2nd Floor of Aincrad.

Description
The sponge cake has a radius of eighteen centimeters and a height of eight centimeters. 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 considered to be extremely delicious and is thus very expensive, exceeding the price of the three main dishes of Kirito and Asuna's dinner at the same restaurant combined. Eating the cake grants the player a fifteen minute-long Luck buff.

Trivia

 * The "short" in "Shortcake" does not actually refer to the size of the cake; instead the term originally meant a crispy cake. This meaning is lost in Japanese, as Japanese shortcakes are made 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.
 * The word "Tremble" in the cake's name most likely refers to the Trembling Cow, which produces the milk used for the cake.