Make the base: In a medium pot, bring the broth to a gentle simmer.
Add garlic, ginger, soy sauce, chili paste, and sugar or honey if using. Let it bubble for 2 to 3 minutes to meld the flavors.
Cook the noodles: Add ramen noodles to the pot and cook according to package directions until just tender. Don’t overcook—they’ll soften more in the bowl.
Prep the creamy mixture: In a separate bowl, whisk the mayonnaise with rice vinegar (or lime juice) and sesame oil until smooth.
This will help it blend into the hot broth without curdling.
Wilt the greens: Stir the spinach or bok choy into the hot pot during the last 30 to 60 seconds of cooking.
Add the tuna: Flake the tuna and gently stir it into the pot, leaving a few chunky bits for texture. Heat through for 30 seconds.
Finish with creaminess: Turn off the heat. Stir the mayo mixture into the pot until the broth turns creamy and slightly pink from the chili paste.
Taste and adjust: Add more chili paste for heat, a splash of soy for salt, or more vinegar for brightness.
Serve: Ladle into bowls.
Top with green onions, sesame seeds, nori or furikake, and soft-boiled eggs if using.