Oxtail with pancetta and grapes
By Matt Tebbutt From Saturday Kitchen Ingredients 2 tbsp olive oil 250g/9oz piece pancetta with rind, diced 2 small brown onions, thinly sliced 2 sticks celery, roughly chopped 2 carrots, roughly chopped 1 bay leaf 2 sprigs thyme 4 garlic cloves, roughly chopped pinch mace 2kg/4lb …