I used shijimi clams in place of manila clams. They're good for your liver. Let's enjoy a beer while eating this pasta.
My sister went on a shijimi clam dig and brought back a lot. Only making soup with them would be a waste, so I came up with this alle vongole-like pasta.
The key is to note how much salt you use. The clams themselves are salty, and you'll be using the salted pasta cooking water as well, so after adding the cooking water be sure to check the flavor.
Enjoy Japanese food around the world.