Drain both cans of tuna well.
In a bowl, combine the tuna, onion, gochujang, ssamjang, sesame oil, a drizzle of honey, and sesame seeds.
Mix until evenly combined.
Blanch the cabbage in boiling water for 1–2 minutes, just until tender but still slightly crisp.
Drain and let cool slightly, then use the cabbage to wrap the tuna mixture.