Historically:
* Mission Era: The San Juan Bautista Mission focused on raising livestock (cattle, sheep) and growing grains like wheat and barley.
* Early California: After the mission period, ranching remained important, with cattle and sheep grazing the vast grasslands. Fruit orchards, especially peaches and apricots, also became significant.
Modern Era:
* Agriculture Today: San Juan Bautista still has a strong agricultural presence. Today, the main products are likely a mix of almonds, pistachios, walnuts, and grapes (for wine). However, the area also sees production of livestock, vegetables, and other fruits.
To summarize: It's not accurate to say that San Juan Bautista had just one main product throughout its history. It's more accurate to say the region has been known for a combination of livestock and crops, with the specific focus shifting over time.