The Volcano Ramen broth had a bolder meaty notes but with the bed of Chili paste added, the broth was multi-dimensional with a cleaner taste (comparing to the Miso Butter Yasai Ramen).
We had both Wafu Signature Ramen and Volcano Ramen in the 6 in 1 set. Between these 2 options, we preferred the Volcano Ramen due to its heat component. The Wafu Signature Ramen is moderate in terms of their depth of flavour and did not really intrigue us to enjoy more of it.