Đun sôi 1 cốc nước dùng trong nồi dưới ngọn lửa vừa.

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What kind of stock? Whatever you want! Chicken, beef, and vegetable are all good – it just depends on what you're pairing it with (chicken goes with chicken, etc.) and what your personal preferences are. As this recipe only makes 2-4 servings, you won’t need a very large pot. However, you can easily double (or even triple) the recipe if need be. The more gravy you need to make, the bigger the pot you’ll need.