In fine-mesh strainer, thoroughly rinse groats under cold running water. Drain well. In saucepan, combine groats with 2 cups water. Bring to a boil, reduce heat to simmer, and cook, uncovered, for 10 minutes, or until groats are tender. Stir occasionally. When groats are cooked, strain off excess liquid and thoroughly rinse with cold water until water runs clear. Transfer groats to large serving bowl along with arugula, snap peas, grapefruit, apple, and avocado.