01 -
3/4 teaspoon ground pepper.
02 -
2 teaspoons of Worcestershire sauce.
03 -
1 teaspoon balsamic or sherry vinegar.
04 -
14.5 ounces beef stock.
05 -
6 ounces shredded Gruyère cheese.
06 -
1 small bunch of fresh thyme sprigs.
07 -
1 large egg.
08 -
1/2 cup dry white wine.
09 -
2 tablespoons plain flour.
10 -
2 tablespoons soft, unsalted butter.
11 -
2 1/2 teaspoons kosher salt.
12 -
1 jar (about 1/2 cup) of panko crumbs.
13 -
1/2 cup 2% or whole milk.
14 -
1 1/2 pounds ground beef.
15 -
2 garlic cloves, finely chopped.
16 -
Roughly 2 pounds of yellow onions (equals about 4 medium or 2 large ones).