In a small bowl, whisk together the gochujang, soy sauce, vinegar, minced garlic, sesame oil, sugar or honey, water, and salt until well combined. If you're sensitive to heat, start with 2 tablespoons of gochujang and add more to taste.
Give it a taste and adjust any ingredient to your liking. If you prefer it sweeter, add a bit more honey. For a thinner consistency, stir in a little more water.
Transfer the sauce to a small saucepan and bring to a gentle simmer over medium heat (you’ll see tiny bubbles), stirring frequently. Cook for about 4 to 5 minutes, or until the sauce has thickened slightly and the flavors have melded together. Add extra water if needed.
Remove from the heat and let cool. Your gochujang sauce is now ready to be drizzled over your favorite dishes!