1. Soak wheat berries in 12 cups water in a large Dutch oven 24 hours.
2. Bring wheat berries and soaking water to a boil over medium-high heat. Reduce heat, cover, and simmer 45 to 50 minutes or until tender. Drain wheat berries, and cool.
3. Stir together wheat berries, tomatoes, and next 11 ingredients until well blended. Serve immediately, or cover and chill up to 2 days. Garnish, if desired.
*3 cups quick-cooking barley may be substituted for wheat berries. Sauté barley in 2 Tbsp. hot olive oil in a Dutch oven over medium-high heat 5 to 6 minutes or until barley is lightly browned. Stir in 6 cups water. Bring to a boil over medium-high heat; reduce heat, cover, and simmer 10 to 12 minutes or until tender. Remove from heat, and let stand 5 minutes. Drain barley, and cool. Stir together barley, tomatoes, and next 7 ingredients. Stir in lime juice and next 3 ingredients just before serving. Garnish, if desired.