Sunomono (Cucumber Salad) is a perfect small side dish. It’s easy to make, healthy to eat, and very refreshing to accompany any main dish.  It’s tangy but sweet, who wouldn’t like it? Japanese cucumbers are much skinnier than American ones.   They have much less seeds (or at least much smaller seeds) and thinner skin.  You might be able to find Japanese cucumbers at some markets in the US.  However, if they are not available, you can use English or Persian cucumbers as substitutes.  Especially Persian cucumbers are very similar to Japanese ones.  Persian cucumbers are a bit shorter, but it doesn’t matter.  Just use one more. We often put seaweed (Wakame) in this salad.  If you like seaweed, go for adding it.  Otherwise, enjoy as it is.