Preheat grill to high heat about 350°.
Remove crust from bread and break up in small pieces in a large bowl.
Add milk to bread and mash together with a fork to form a chunky paste.
Add in minced garlic, worcestershire sauce, ketchup, salt, and pepper and mix well.
After everything is mixed well add in the ground beef and scallions (optional) and gently mix together with hands. Do not overmix.
Round in one big ball and flatten slightly so you can divide into 4 equal portions.
Flatten equal portions into hamburger patties about 4 1/2 inches across. Press your thumb in the middle of each patty to create a slight indent so hamburgers don't puff up while grilling.
Place hamburger patties on a lightly greased grill with the indented side facing up. Cook for at least 4 minutes before flipping over.
Flip hamburgers over and cook for another 4 minutes for medium done. Adjust times for medium-well 2-3 minutes, medium-well 1-2 minutes.
Add Cheese or any other toppings you may want. Options Onions, Peppers, Cheese,
Place on a Hamburger Bun and Enjoy!