Sage, mushroom and potato tortilla | Fast Ed

Ingredients

• 2 flat mushrooms, stems trimmed
• 1 Tbsp unsalted butter
• 2 bunches sage
• salt flakes and freshly-milled black pepper
• 300g button mushrooms, sliced
• 2 cloves garlic, minced
• ¼ cup extra virgin olive oil
• ½ bunch parsley, finely chopped
• 2 eschalots, finely sliced
• 2 potatoes, peeled and finely sliced
• 6 eggs
• 150ml cream
• 2 Tbsp grated pecorino