Final answer:
California brandy is made from a mix of white and red grapes like Trebbiano and Cabernet Sauvignon.
Step-by-step explanation:
The California brandy is made from a mix of white and red grapes. The white grapes, primarily Trebbiano (Uni Blanc), are used for the base of the brandy, while the red grapes, such as Cabernet Sauvignon, add color, flavor, and complexity. This combination of different grape varieties creates the unique characteristics of California brandy.