Begin this recipe two days ahead to marinate the meat.
Note Instead of oyster blade, you can use boned, trimmed short rib or chuck steak. The former may be portioned like the oyster blade and will take 2-2½ hours to cook. The chuck should be diced in 2.5cm-3cm pieces and will take a similar time. Veal glace is a highly reduced veal stock. Boil 750ml good low-salt veal stock over medium-high heat until reduced to 150ml.