Made a nice strong beef stock for the gravy to go with today’s Christmas roast, well in advance, by slow cooking a whole oxtail over 36hrs, then reducing down to a demi-glace. Yum.
Got that out of the freezer today, melted it, then just as a last minute thought added the juice that had dripped out of the beef while it was defrosting. Turns out that was a BAD IDEA. When I started to reheat my carefully clarified stock to make the gravy, it suddenly started turning into something like grey scrambled egg… Aaargh!
What was happening looked exactly like an extreme form of ‘hot break’ - and it turns out that’s what it was… proteins coagulating and precipitating out. Turns out that red liquid that comes from the meat isn’t blood at all, but water and myoglobin: a protein that transports oxygen around the muscles.
Anyway, that’s a mistake I won’t be making again! Fortunately I was able to filter enough clear liquid it to get a decent gravy, but it was a close call and I’d have been in big trouble if there’d been nothing to go with the roast …
Got that out of the freezer today, melted it, then just as a last minute thought added the juice that had dripped out of the beef while it was defrosting. Turns out that was a BAD IDEA. When I started to reheat my carefully clarified stock to make the gravy, it suddenly started turning into something like grey scrambled egg… Aaargh!
What was happening looked exactly like an extreme form of ‘hot break’ - and it turns out that’s what it was… proteins coagulating and precipitating out. Turns out that red liquid that comes from the meat isn’t blood at all, but water and myoglobin: a protein that transports oxygen around the muscles.
Anyway, that’s a mistake I won’t be making again! Fortunately I was able to filter enough clear liquid it to get a decent gravy, but it was a close call and I’d have been in big trouble if there’d been nothing to go with the roast …