Which Banarasi textile technique involves single or double warp with multiple weft colors?

The Tanchoi saree is a distinctive Banarasi textile characterized by its unique weaving technique that incorporates single or double warp threads with two to five colors in the weft, all crafted on silk fabric. This particular style is primarily produced in Varanasi. For comparison: Chanderi sarees are semi-transparent fabrics woven with silk, zari, and cotton primarily in Madhya Pradesh; Baluchari sarees from Murshidabad, West Bengal feature narrative designs depicting historical stories on their borders and pallu; and Patola sarees are intricate double-ikat woven textiles produced in Patan, Gujarat.