This shareable ceviche is a veritable ray of sunshine on a plate. It's prepared with very fresh white fish, dressed with lemon juice, basil oil and hot sauce. Diced apples provide a crisp texture that's the perfect contrast to the tenderness of the fish. Before serving, add cucumber water for a refreshing and aromatic touch, and complete the dish with a few cucumber slices, basil leaves and a drizzle of basil oil. Serve with tostadas or corn chips, and you've got a light and refined recipe for happy hour.