Place veal legs, turkey wings, and chicken quarters in a pot. Wash thoroughly, cover with cold water, and bring to a boil. Drain, rinse the meat and clean the pot.
Return meat to the clean pot, cover with cold water again, and bring to a boil. Reduce heat to low and simmer for at least 6 hours, adding salt and pepper to taste.
Remove all meat from the pot and let cool. Strain the broth through cheesecloth. Pour some broth into a separate pot, add a whole crushed head of garlic, and let it infuse for about 20 minutes.
Separate the meat from the bones and divide into serving containers. Strain the garlic-infused broth and pour a little into each container.
Add the remaining plain broth to each container. Garnish with sliced hard-boiled eggs. When slightly set, refrigerate until fully firm.