Stock cubes or powder are a great alternative when you need stock in a hurry. It is not as nutritional as homemade stock, but stock cubes are a great way to add flavor to a dish. To make chicken stock with stock cubes: the general rule is to dissolve one cube or one heaped teaspoon of powder in one cup of hot water. So, if you need one liter of stock; mix 4 stock cubes or 4 teaspoons of powder in 1 liter (4 cups of hot water). Stock cubes and powder contain salt, so consider this when using stock cubes and season your dish to taste at the end of cooking.