For when you are a bit hungry, The small Tokyo Ramen instant noodles

The "Tokyo Ramen" is a brand name of small size instant noodles.
Tokyo Ramen company provides the brand (a funny thing is, the company is located in Tochighi prefecture even though they have Tokyo on their name).
You can find the products in supermarkets or some groceries in all over Japan.

The noodles are small, and have a right size for a mug.
If you are a bit hungry, the products are convenient for a light snack.
Each Tokyo Ramen are sold in a set which consists of 4 noodles.
A set costs about 100 yen.
Currently they have 5 types of the noodles.
They are chicken, salty shrimp tonkotsu, kimchi, curry and garlic seasonings.

I often eat the noodles as a night snack.
When I eat the noodles, most of time I use 2 noodles at one time.
I like to mix the curry noodle and the garlic noodle.
It is a bit insufficient for a lunch, but enough for a midnight snack.

I won't recommend you to eat the cheap foods like the noodles everyday in your stay in Japan.
However if you like to do a budget travel through Japan, using the noodles may save your expense.