Gomadashi / fish sesame paste

I first encountered the expression gomadashi on a website introducing regional udon specialties. It is a paste made of grilled fish, sesame seeds, soy sauce and sweetener. The paste's name does not intuitively convey how tasty it is. It is typically served with udon wheat noodles. It is also good with rice and as an addition to a number of dips and dressings. When making the paste, grilling the fish takes the longest, and once it is done, the paste should keep in the fridge for a relatively long time -- 4 weeks when made with regular soy sauce is what people say, so probably 2+ weeks with the reduced sodium version below.

1 tbsp (20g):
56 calories; 3.8 g protein; 3.4 g fat; 2.8 g carbohydrate; 2.0 g net carbs; 190 mg sodium (with 50% reduced-sodium soy sauce & shoyukoji made with 50% reduced-sodium soy sauce); 5 mg cholesterol; 0.8 g fiber

Whole recipe (approx. 170g):
476 calories; 32.5 g protein; 28.8 g fat; 23.7 g carbohydrate; 16.7 g net carbs; 1,601 mg sodium (with 50% reduced-sodium soy sauce & shoyukoji made with 50% reduced-sodium soy sauce); 42 mg cholesterol; 7.0 g fiber

Shoyukoji / soy sauce rice malt

Shoyukoji is technically the base of soy sauce in the production process (see Kikkoman website). However, today the term is more commonly used to mean a mixture of shoyu soy sauce and koji rice malt, which has become popular in the last few years in Japan and among the Japanese community overseas. Just like shiokoji salted rice malt, shoyukoji is full of umami. In fact, its glutamic acid content is said to be 10 to 15 times of that of shiokoji.