Cobalt Necktie

The Cobalt Necktie is a special item, an equippable accessory that is obtained from the Starbeans Cafe in Mario & Luigi: Superstar Saga and its remake. It is the sixth special item Mario and Luigi receive from Professor E. Gadd after brewing a unique blend that has not been brewed before. When a brother has the Cobalt Necktie equipped, his STACHE stat points are doubled.

In earlier versions of the game, the Cobalt Necktie had a drastically different appearance and name. Called the UV Lamp, the item was originally supposed to be handed out by a small cameo appearance of Captain Olimar rather than Professor E. Gadd. While the name has changed to reflect a different item, no unique sprite for the UV Lamp has been found.

In-game description

 * Mario & Luigi: Superstar Saga - Double your Stache points! (Shining Stache)
 * Mario & Luigi: Superstar Saga + Bowser's Minions - Double your STACHE points! (Double STACHE)