Shishito peppers are medium-sized green wrinkled peppers. The spice level ranges from mild to spicy based on the pepper.
These peppers are often stir-fried with fish cakes, nuts, garlic, potato, or seafood (example: squid or dried anchovy). This pepper removes the fish smell from stir-fried anchovy and so that is one reason you may see dried anchovy and shishito pepper paired together as a side dish. Shishito pepper can also be used when making soy-braised beef and eggs or added to dishes as a garnish.
When you buy these peppers you want to use them sooner rather than later. If shishito peppers are stored for too long then the seeds inside will turn dark.