It is known as the ‘Bianchissimo’, or the whitest, is one of a variety of sweetened dry vermouth. It is made from filtered white wine that is sweetened and infused with different botanicals that include vanilla flowers, spices, herbs, citrus zest, barks, and roots.

Want to make a Martini Bianco Tonic? 

Transforming Martini Bianco into a long drink, ice-cold tonic water softens the sweet vanilla notes of the white vermouth for a crisper, cleaner finish. A ratio of 50/50 vermouth and tonic ensures a perfect balance of flavors, while the balloon glass, packed with ice, will help concentrate the fragrant botanicals, for a more intensely aromatic experience.- martini.com