Prepare the chili peppers, garlic, and onion.
Blend the chili peppers, garlic, onion, erythritol, and salt in a mixer until smooth.
Heat oil in a pot and sauté the blended ingredients over medium-low heat.
Add low-sugar soy sauce and brown rice vinegar to the sautéed mixture, stir well, and bring to a gentle boil.
Cool the finished low-sugar gochujang and store.