Preheat oven to 350°F (175°C). Line a baking sheet with parchment paper.
In a skillet, sauté onion and celery in olive oil for 5–8 minutes. Set aside.
In a large bowl, combine meats, herbs, eggs, milk, salt, pepper, panko (finely processed), and cooled veggies. Mix gently.
Shape mixture into a 15"x6" cylinder on the sheet.
Bake 40–50 minutes until internal temp is 155–160°F. Let rest before slicing.
While baking, simmer garlic in olive oil for 10–15 minutes until golden.
Strain and save oil.
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