Boil the noodles. Bring a pot of water to a boil. Cook ramen according to package directions until just shy of tender. Reserve 1 cup of starchy cooking water, then drain.
Prep your aromatics. Mince the garlic and ginger. Slice the scallions, separating whites and greens.
Stir together the sauce base. In a small bowl, mix 2 tablespoons gochujang, 1 tablespoon soy sauce, 1 tablespoon brown sugar (or honey), and 1–2 teaspoons rice vinegar.
Add 1 teaspoon sesame oil. Adjust to taste—more gochujang for heat, more sugar for sweet, more vinegar for tang.
Sauté aromatics. In a large skillet over medium heat, melt 1 tablespoon butter. Add garlic, ginger, and scallion whites.
Cook 30–60 seconds until fragrant, not browned.
Optional protein and veg. If using chicken, shrimp, tofu, or veggies, add them now. Sauté until just cooked. Season lightly with salt and pepper.
Build the sauce. Pour in the sauce base and 1/3 cup reserved noodle water.
Stir until smooth and slightly thickened, about 1–2 minutes. If it tightens too much, splash in more noodle water.
Toss in the noodles. Add the drained ramen to the skillet. Toss vigorously so every strand gets coated.
Add another small knob of butter or a drizzle of sesame oil for extra gloss if you like.
Finish and taste. Add scallion greens. Taste and adjust: a touch more soy for salt, brown sugar for balance, or vinegar for brightness. For more heat, sprinkle gochugaru or red pepper flakes.
Plate and garnish. Top with sesame seeds.
Add a soft-boiled egg, lime squeeze, or extra scallions if desired. Serve hot.