Chop loaf of bread into bite-size pieces. Place in a large paper bag and leave out overnight to dry. Bag should be left open, and you can toss every now and again to rotate bread pieces.
When ready to make, place chopped bread in a large bowl.
In a large pan over medium heat, melt butter.
Once butter is melted, add celery to pan with a pinch of salt and sauté for 5 minutes.
Add onion to celery and sauté together for 5 minutes.
Time for garlic! Toss garlic into celery/onion mixture and cook for 2 minutes.
Remove mixture from heat and pour it over chopped bread. Make sure to use a spatula to get every last drop of butter onto that bread.
Next, add rosemary, thyme, lemon zest, and egg. Give it all a toss.
Add chicken stock a little at a time, stirring after each addition. Stuffing should be wet, but not drenched, ya know? I usually use all of it, but do it to your discretion.
Season to taste with salt and pepper!
Now stuff it up the ass of your turkey or my PERFECTLY OVEN-ROASTED WHOLE CHICKEN and call it a day. If there are extras, place them in an oven-safe dish, cover with tinfoil, and pop it in the oven with 20-25 minutes left on the bird.