California famously became the first state to ban foie gras in 2004. Now, the Golden State is targeting another culinary tradition: the handmade tortilla. A new bill in Sacramento, if passed, would mandate adding folic acid to corn masa flour. Pushed under the auspices of public health, the costs of this well-intentioned idea—as always—will disproportionately fall on small businesses. Assembly Bill 1830, introduced by Assemblymember Joaquin Arambula (D–Fresno), would require all masa manufacturers to fortify their products with folic acid. This will affect producers of tortillas, as well as pr…