Cannot get water to drain on disposal side of sink?

I have a Waste King Disposal in a stainless sink. I had just put leftover celery strings, lemons and carrots from making a recipe and it was too much for it too handle, expecially the strings of the celery and lemons....I have the same problem when I put down a lime. Usually putting ice cubes helps and it clears up. This time no luck. Can you help ? Thank you.