Here's a quick recipe for same-day pickles: 1. In a deep bowl, combine cucumber and onion slices. Sprinkle with salt and toss well. Let it stand for 30 minutes, then rinse and set aside. 2. In a deep pot, add vinegar and sugar. Bring it to a boil, then reduce the heat to a simmer and cook for 5 minutes. Add the desired spices along with the rinsed cucumber and onion slices.