Measure another ½ tablespoon of olive oil in the same pan, add in the garlic and spring onion whites and sauté it. Next, add in the mushroom, and fry it for a minute or two, then add the onions. Keep sautéing it, and then add in the cut broccoli. Give it all a good fry and mix. After that, add a vegetable, chicken or fish stock to the pan. Add in some water. When it starts to bubble, cover and cook it for 2 to 3 minutes till the vegetables are soft.