Technically it’s called a 50/50 because it’s half gin and half vermouth. As you will not be separately stirring these ‘tinis, water is contributed to assist in the dilution you ‘d typically obtain from ice. That’s essential to change the mix from pure alcohol to a yummy, drinkable drink. This is the mixed drink hour course from Alison Roman’s “Steak Home Night in America” menu: Low-and-Slow Rib Roast, Baked Potatoes Deluxe, The Best Creamed Greens, and Upside-Down Apricot Tart.