Sesame oil in ramen definitely takes it to the next level. Another fun addition is liquid dashi concentrate, which lends a nice deep umami flavor.
The other umami adder that’s worth playing with is fish sauce. I find that as it cooks it loses its aroma, making it easy to use in a wide variety of recipes.
My One-Step Guide to Turn Soup from Watery Crap into Something You Would Want to Eat
Step 1: Add a little bit of oil to taste....