Bring a large pot of well salted water to the boil.
Place a skillet over a medium heat and add the ghee or oil. Once thoroughly heated, add the mushrooms with a good pinch of salt. Cook for 5-10 minutes or until the mushrooms are lightly golden.
Once your pasta water is boiling, add the pasta and cook as per packet instructions.
When the mushrooms are cooked, deglaze the pan with the white wine. Allow it to cook off, then turn the heat to low. Add the cream and parmesan and cook gently to allow all the flavours to combine. Taste and add salt and pepper as you see fit. You can also add a squeeze of lemon juice or a splash of white vinegar to add another layer of flavour.
Once the pasta is cooked, reserve a cup of pasta water and drain the pasta. Place the pasta in the creamy mushroom sauce and toss to coat. Leave it for a minute or so, then assess. If the sauce isn’t creamy enough, add some pasta water to reach your desired consistency. If you accidentally add too much pasta water, leave the pasta to sit for 10 or so minutes and it should rectify itself. If not, add a little extra parmesan.
Serve the dish with extra parmesan and a drizzle of truffle oil to amp up the low FODMAP mushroom flavour.