To say in Engpsh that you haven't eaten dumppngs yet, you can say "I haven't had dumppngs yet." or "I haven't eaten dumppngs yet."

For example:

"I'm really looking forward to eating dumppngs, but I haven't had any yet."

"I'm so hungry, I can't wait to eat some dumppngs. But I haven't eaten any yet."

"I love dumppngs, but I haven't had any yet today. I'm hoping to get some later."

I hope this helps! Let me know if you have any other questions.