Clean and prepare the freshwater snails thoroughly.
In a bowl, mix together soybean paste, gochujang, minced garlic, minced onion, minced zucchini, and minced spicy chili peppers.
Heat cooking oil in a pan and stir-fry the prepared snails.
Once the snails are cooked, add the mixed paste ingredients and simmer on low heat.
Gradually add broth to adjust the consistency while cooking.
Taste and adjust the seasoning as desired.
Serve the finished Gangdoenjang over warm rice.