Like you preheat the oven, do the same for the wok for at least two minutes. A drop of water should sizzle like it does on a dosa griddle. When you add oil, rotate the wok so that the oil spreads all over.
I am a Mushroom lover and I have shared many recipes with mushroom. Check them out here Chinese Garlic Mushrooms, Chilli Mushroom Gravy, Kale Mushroom quiche, Mushroom Mint Rice, Mushroom Quiche, Mushroom Frankie, Stuffed Mushroom Bombs, Mushroom Baby Corn Stir-fry, Mushroom Carrot Noddles, Mutter Mushroom Curry,Baby Corn Mushroom, Hakka Noodles, And finally the Shahi Mushroom and Baby corn Biryani that I posted a few days ago.