Speaking of frozen vegetable, Costco's Kirkland Signature Stir-Fry Vegetable Blend is very good. It contains a variety of premium frozen vegetable and keeps well in the freezer. Its also easy to cook, you can throw in some diced/cubed meats (beef or chicken or pork etc) in the stir-fry before adding in the vegetable, or skip the meats to have a vegetable only stir-fry.