What's wrong with my beef?

[ninnypoo]

I put a brisket joint in the slow cooker at 1pm today using this recipe: allrecipes.co.uk/recipe/17545/riko-s-juicy-slow-cooked-roast-brisket.aspx

Helpful DP turned the slow cooker up to high at 5.45pm. It's now really tough and nowhere near falling apart! Any ideas how to salvage?

[stoneagemum]

It needs longer to cook, turn back to low and leave for another 3 hours. Not much good for tonight's dinner thou.
You could try adding some wine vinegar so the acid helps break down the meat too