Put all the listed ingredients into a food processor and blend to finish. Pictured here in the front is the basil sauce, with the shiso sauce in the back. They don't look too different.
We usually add 1 scant teaspoon of this sauce into the natto instead of the accompanying natto sauce. It's great for your health and beauty.
If you're making basil sauce, it's also great to knead it into the pizza dough.
[To preserve:] To prevent the oil from oxidizing, I usually cover them up with plastic wrap and flatten them out to freeze. I just break off however much I need to defrost.
Story Behind this Recipe
I made this to use up my home-harvested basil and shiso leaves. It was actually quite tasty and versatile, so I decided to post this recipe as a reminder for myself.
You can mix this sauce into natto, pasta, sautéed potatoes, or even salad - use it as you like. This sauce becomes more nutritious if you add more oil In fact, the Vitamin K (which actually works against osteoporosis) from the natto becomes more easily absorbed if you add more oil.