noun which may take the genitive case particle 'no'
somewhat less; slightly below; on the low side
Used to describe a quantity, amount, or degree that is a little less than a standard or expected level. Often used with nouns like 量, 人数, 塩分, etc.
There are somewhat fewer customers than usual today.
Please go easy on the salt for your health.
I made the dish with a bit less salt than usual.
Could I have a smaller portion of rice, please?
Cooking with a little less oil makes it healthier.