Casa Gancia is rolling out Leggero Prosecco, a light prosecco containing only 0.6g of sugar per 100ml serving, which is four times less than regular prosecco. Crafted from Glera Grapes and with an ABV of 11.5%, Gancia Leggier Prosecco is made using the Martinotti Method, the method developed in Asti in 1895 by the Italian …