Slice cucumbers and onions (or leeks, or scallions – your choice) as thin as possible into bowl. Add garlic (amount depending on how much you like) and spices. The ones I listed are the ones I like, you might have different preferences. Cover with 2/3 rice vinegar and 1/3 water (again, if you like it tangy – add more vinegar, if not, add less). Sweeten with a small amount of sugar. Let sit for a few hours in refrigerator. Enjoy!