INGREDIENTS
•
2 T olive oil, divided
•
1 onion, diced
•
1 pound ground beef
•
1 pound ground pork
•
1/2 cup panko
•
2 large egg yolks
•
1/4 t ground allspice
•
1/4 t ground nutmeg
•
1/4 t kosher salt
•
1/8 t freshly ground black pepper
•
Sauce:1/4 cup unsalted butter
•
1/3 cup flour
•
4 cups beef broth
•
3/4 cup sour cream
•
kosher salt
•
freshly ground black pepper
•
2 T snipped fresh chives