Serves 2 Ingredients: 2 x 180g fillet steak medallions  2 Tbsp butter 2 large shallots, finely diced 1 clove garlic, minced 250g portabellini mushrooms, sliced 60ml / 4 Tbsp brandy  125ml beef or mushroom stock 125ml cream 1 Tbsp Dijon mustard 2 Tbsp Worcestershire sauce Chives, to serve  Salt and pepper, to taste  Olive oil,…