In 12-ounce footed Old Fashioned glass, add simple syrup, Angostura bitters and 1 ounce soda. Lightly stir, then add brandy. Fill glass with ice, and top with soda. Garnish with cherry and orange slice.
*For a “sweet” Old Fashioned, use a “white” soda (Sprite or 7-Up). For “sour,” use a grapefruit soda (Squirt or Graf’s 50-50). For a less sweet version, or a “press,” use seltzer water or half seltzer, half “white” soda.