1Drain the 250g canned whelk, reserving 30g of the whelk brine. If the whelk pieces are large, slice them into bite-sized pieces.
3In a large mixing bowl, combine the 60g gochujang, 15g gochugaru, 30g rice vinegar, 20g granulated sugar, 15g minced garlic, 10g sesame oil, 5g toasted sesame seeds, and the reserved 30g whelk brine. Mix well to create the spicy dressing.