1 tbspolive oil20 gmbutter2cloves of garlic, finely chopped200 gmmixed mushrooms, (such as Swiss brown, chestnut, pine and button), large ones thickly sliced125 ml(½ cup) dry white wine8eggs1 tbspthyme leaves100 gmfontina, coarsely choppedTo serve:baby green leaf salad
Heat olive oil and butter in a 24cm-diameter ovenproof frying pan, add garlic and sauté until starting to colour (1 minute). Add mushrooms and stir to coat then add wine and cook until evaporated (5 minutes).
Meanwhile, preheat a grill to high. In a bowl, whisk together eggs and thyme and season to taste with sea salt and freshly ground black pepper. Pour over mushroom mixture and cook, stirring to evenly disperse mushrooms and bring egg mixture into the centre. Cook until almost set (6-8 minutes), scatter with fontina and place under grill until cheese melts and frittata is completely set (2 minutes). Cut into wedges and serve with a baby green leaf salad.