Wash and trim the asparagus. Cut the asparagus into pieces about 1 inch long, reserving tips. Heat the oil in a skillet or wok until hot. Add the garlic, the asparagus and mushrooms. Stir fry for about 2 minutes (or to taste). Now add the wine, soy sauce, the asparagus tips and cashews. Mix well and stir fry for 2 more minutes. Serve warm.