A restaurant specialized making dumplings should excel what they do. The dumpling I had was just mediocre. Dry wrap with losing fillings. I expect they come in with hot steam so I can sense the freshness right from the start. But unfortunately they came in warm and soon get cold when dipping the vinegar. Like microwaved packaged foods don't hold the heat long.
I would very much like to tip more if it wasn't a walk-up self pay system. Which I waited in a line with 3 people ahead. The frontdest is in the middle of the restaurant so you have to stand there to wait which is really uncomfortable to me. And This is the first only restaurant who has asked me for tip in French.