01 - Rinse the farro under cold water. Combine farro, water, and salt in a medium saucepan. Bring to a boil, then reduce heat and simmer uncovered for 20-25 minutes, or until farro is tender but chewy. Drain any excess water and let cool slightly.
02 - While the farro cooks, dice the cucumber, halve the cherry tomatoes, thinly slice the red onion, and chop the parsley and mint.
03 - In a small bowl or jar, whisk together olive oil, lemon juice, orange juice, honey or maple syrup, Dijon mustard, minced garlic, salt, and pepper until emulsified.
04 - In a large mixing bowl, combine the cooked farro, cucumber, cherry tomatoes, red onion, parsley, and mint. Drizzle with the citrus dressing and toss well to coat.
05 - Taste and adjust seasoning if needed. Divide among serving bowls. Top each with feta cheese, toasted nuts, and lemon or orange zest if desired. Serve immediately or chill for later.