Start by chopping up the garlic, ginger and spring onion - it's a very quick dish, so you want everything ready for when you start cooking. Finely chop the garlic and ginger and slice the spring onions finely - you're going to use the white part to cook with and the green part to finish the dish, so reserve for later.
Get a wok on a medium high and add the pork mince, break it up in the pan and cook until you get some good colour on it. When nicely browned, add the garlic, ginger and white spring onion and cook for a further 2 mins, stirring occasionally.