How to Make It
In a large saucepan, combine the farro, carrots, onion, celery, garlic and bay leaf. Add enough cold water to cover the farro by 1 inch and bring to a simmer over high heat. Reduce the heat to moderate and cook until the farro is tender but chewy, 15 minutes; drain. Spread the farro on a rimmed baking sheet to cool. Discard the carrots, onion, celery, garlic and bay leaf.
Meanwhile, in a large saucepan, heat 1 inch of canola oil over moderately high heat until a deep-fry thermometer registers 350°. Fry the cauliflower in batches until golden, 5 minutes per batch; drain.
In a bowl, mix the farro, cauliflower, prosciutto, olive oil, lemon juice and herbs. Season with salt and pepper and serve.