2. The key is to spread the ketchup with black sauce made of Gangge pork rolls on the bread.

3. Put cucumber, onion, coriander, eggs, meat (braised pork, chicken fillet, tripe, etc. You can put it in the bread according to your own taste.

4. Just roll it up (roll it steadily when you roll it, so it will taste better). The most important thing is that you must feel soft when you eat it in your mouth, and the taste will be beautiful.