In a large food processor, place garlic, basil, oregano, parsley, thyme, sage, celery, and onion. Place garlic and herbs on the bottom. Pulse for 15-20 seconds, but do not turn on continuous chop setting or mixture will become soggy. Check mixture for consistency. It should be finely chopped with no large pieces, but not mushy. Pulse a few more times if necessary, but don’t overdo it. Remove mixture from food processor and remove any large stray pieces if necessary.