Cocktail Bar Igihe Gamsei yafungurwaga mu 2013, hyper-localism yatangijwe mu myitozo yari ifite kugeza icyo gihe yari igarukira gusa ku biryo. I Gamsei, ibirungo bya cocktail biribwa cyane cyangwa bihingwa nabahinzi ba artesian. Imbere yimbere, ni ugukomeza neza iyi filozofiya. Kimwe na cocktail, Buero Wagner yaguze ibikoresho byose byaho, kandi akorana mubufatanye bwa hafi nababikora kugirango batange ibisubizo byabigenewe. Gamsei nigitekerezo cyahujwe rwose gihindura ibyabaye byo kunywa cocktail mubyabaye bishya.
Izina ry'umushinga : Gamsei, Izina ryabashushanya : BUERO WAGNER, Izina ry'abakiriya : Trink Tank.
Igishushanyo kidasanzwe nuwatsindiye igihembo cya platine mugikinisho, imikino nibirori byo gushushanya ibicuruzwa. Ugomba rwose kubona ibihembo bya platine byegukana ibishushanyo mbonera bya portfolio kugirango umenye ibindi bikinisho byinshi bishya, bishya, byumwimerere kandi bihanga igikinisho, imikino nibikorwa byo gushushanya.
