"Ich gebe es an die Küche weiter "
I found that sentence in a dialogue where the customer was complaining about how salty the soup was and that was the waiter response .
So my question is : Does this sentence means that the waiter will inform the kitchen that the soup was salty or that he will take the soup to the kitchen ?
Great question! The phrase means "I'll give it to the kitchen" In english, so one who does not natively speak German or does not know the language well enough would probably infer that it means they will do both inform the kitchen AND take the soup to the kitchen. I hope that helps!