Place Half Of The Cucumber In A Alrge Glass Bowl. Top With Half The Onion. Repeat The Procedure With The Remaining Cucumber And Onion. Combine Vinegar And Remaining Ingredients In A Sauce Pan; Stir Well. Bring To A Boil; Boil 1 Minute. Pour The Mixture Over The Cucumber And Onion; Let Cool. Cover And Marinate In Refrigerater For 4 Days.